Is making jam a physical or chemical change
Answer: Chemical change
Explanation:
When making jam, you are mixing different ingredients together that form a new substance.
Answer:
· Yes it is a chemical change because when you're making the jam, the chemicals of the ingredients come together
Explanation:
you predict that you should make 8.41 x 1024 molecules of ammonia in your reaction. how many grams of ammonia will you make if your prediction is correct?
The ammonia molecules involved in your process. 2.39 g of ammonia will be produced by you.
given that :
No. of ammonia there: 8.41 × 10²⁴
molar mass of ammonia : 17 g /mol
no. of molecules = (mass / molar mass ) × Avogadro's number
8.41 × 10²⁴ = (mass / 17 ) × 6.022 × 10²³
mass = 17 / 7.1
mass = 2.39 g
Consequently, a reaction that will produce ammonia as a byproduct. You project that your process should produce 8.41 × 10²⁴ ammonia molecules. 2.39 grams of ammonia can be produced.
What does the chemical term "molecular" mean?
The most frequent uses of the term "molecular" are in biology and chemistry, and it invariably refers to the tiniest components of living things or substances. The name molecule, which meaning "very minute particle," is derived from the Latin word molecula, which means "small bulk."
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how many milliliters of 10.5 m hcl(aq)10.5 m hcl(aq) are needed to prepare 205.0 ml205.0 ml of 1.00 m hcl(aq)?
The milliliters of 232 quantity of HCl required for preparing 1M HCl.
The fact that water has a concentration of 10-7 for both hydronium and hydroxide must be taken into account when the concentration of acids very close to or less than 10⁻⁷.
We frequently overlook the ion concentration in water for the same reason that we frequently ignore the mass of electrons (we just add the protons and neutrons), which is that they are so minute. For taking the -log conc, there is an exception in this case.
M1 * V1 = M2 * V2
10.5 * V1 = 1 * 740
V1 = 70.48 ml
Initial moles of solute are calculated as follows: molarity * volume in liters = 12 * (61/1000) = 0.0732 moles.
The 238 ml of solution now contains these moles.
0.0732 moles are present in 238 ml of solution.
Therefore, 119 ml of solution will contain = 0.0732 * 119 / 238 = 0.0366 moles of solute.
As of right now, the solution's total volume is 119 /113 = 232 ml, or 0.232 liters.
Final concentration is equal to moles divided by the volume in liters, or 0.0366/0.232, or 0.158 M.
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it takes to break a carbon-carbon double bond. calculate the maximum wavelength of light for which a carbon-carbon double bond could be broken by absorbing a single photon.
The energy required to break one mole of the C-C bond is 348 kJ and the maximum wavelength is 3.44 X 10⁻⁷ m.
Thus, the amount of energy needed to break one C-C bond is given as,
348 x 1000 / 6.023 x 10^23
Required energy is 5.78 x 10^-19 Joules.
The relationship between wavelength and energy is given as,
E = hc / λ
Where,
wavelength is λ
Planck's constant is h.
the speed of light, is c
Substitute the values in the expression to obtain the value of λ,
5.78 X 10⁻¹⁹ Joules = 6.62 X 10⁻³⁴ X 3 X 10⁸ / λ
λ = 3.44 X 10⁻⁷ m
The highest wavelength of light at which a single photon may break a carbon-carbon single bond is 3.44 X 10⁻⁷ m.
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at very high pressures, which interactions between gas molecules contribute most to nonideal behavior?
The actual gases display intermolecular forces of attraction. the gases cannot act perfectly. Due to the gas molecules' near proximity to one another under high pressure, attraction forces begin to develop between them.
What leads to an imperfect solution?There are two ways that non-ideal solutions might form: the intermolecular interactions between the molecules of the solute and the solvent are weaker than those between molecules of similar (of the same kind) molecules. the intermolecular forces between molecules are stronger than the forces between molecules that are comparable.
What is the result of high pressure natural gas compression known as?The fuel gas known as CNG (compressed natural gas) is compressed to less than 1% of the volume it would have at normal atmospheric pressure. It is distributed and kept at a pressure of 20–25 MPa in rigid containers.
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Make a claim question about energy and states of matter
The same amount of matter can represent distinct states of matter by having different amounts of energy. An ice cube comprised of water, for instance, changes into liquid water when you add energy, and when you add even more energy, it turns into steam.
What is energy ?In order to accomplish work and to produce heat and light, energy must be transferred to a body or to a physical system. Energy is the quantitative attribute that does this. It is a mechanically accepted quantity.
The observable cosmos is made up of matter, which coupled with energy serves as the foundation for all objective occurrences. In physics, energy is the ability to perform work. It could exist in several forms, such as potential, kinetic, thermal, electrical, chemical, radioactive, etc.
Thus, The same amount of matter can represent distinct states of matter by having different amounts of energy.
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when the elements are arranged in order of increasing number of protons, certain sets of properties recur periodically. true or false
True, According to Mendeleev's periodic table when atoms are arranged in increasing no. of atomic mass some properties recur periodically, which later changed to the modern periodic law.
What is a Modern Periodic Table?According to the contemporary periodic law, an element's physical and chemical characteristics are periodic functions of its atomic number.
From left to right across each row, scientists organized elements in increasing order of their atomic numbers. and found that items with identical features recur at predictable periods.
Thus, according to modern periodic law when elements are arranged in increasing order of atomic no. certain physical and chemical processes. recur periodically.
True, According to Mendeleev's periodic table when atoms are arranged in increasing no. of atomic mass some properties recur periodically, which later changed to the modern periodic law.
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22. What is the difference between lodine-130 and lodine-131?
The first radioiodine isotopes to be used to treat thyrotoxicosis were iodine-130 and iodine-131 in 1941, and thyroid cancer was added to their list of uses in 1943.
What is Reactor produced radioiodine?Iodine-131, the most frequently prescribed radioiodine isotope for treating thyroid conditions, is a radioactive created in reactors and is widely available in the market. Uranium-235 isotope fission and the so-called (n, ) reaction are its two primary production processes.Iodine-131 is a radioisotope that is simple to obtain in pure form as its chain yield is quite high and radioiodine isotopes with masses higher than 131 have a short half-life. Contrarily, Technetium-130 undergoes a reaction with (n, ) to produce Technetium-131m and Technetium-131g. Depending on whether a wet chemical separation or a dry distillation process is employed, TeO2 or Te-metal is the target material for irradiation.Iodine-131 has a high radiochemical purity and is marketed as a diluted sodium hydroxide solution. When using iodine-131 to identify organic molecules, it may interfere if a certain reducing agent is used to preserve the isotope in the form of iodide in certain solutions.Another radioisotope created in reactors is iodine-125, which is formed when Xenon-124 undergoes the (n, ) reaction. High chemical and radiochemical purity iodine-125 is marketed as a diluted sodium hydroxide solution. It contains 4 to 11 GBq/ml of radioactive material.To Learn more About radioiodine refer to:
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The heat of combustion for sugar is 5639 kJ/mole, but that for TNT is 3406 kJ/mole. Why, if the heat of combustion for TNT is smaller than for sugar, is TNT an explosive?
Heat of combustion used to explain the relative stability of the compounds.
The heat of combustion definition is the variation in energy released in the form of heat through the burning of an amount of any substance, all reactants being in the standard state (temperature of 25 C and pressure of 1 atm).
When the amount is quantified for 1 mole of said substance, one can define this quantity as the molar heat of combustion.
The molar heat of combustion values are defined in kilojoules per mole (KJ/mol). The kilojoule is a unit of energy and corresponds to 1000 or Joules (J). Mole is a unit of measurement used to express the amount of matter.
Now sugar is a non electrolyte so comparatively more stable hence more energy required to decompose the sugar hence its heat of combustion value is -5639kJ/mol high.
Where as TNT used as an explosive so it is susceptible for reaction and combustion, hence low amount of heat of combustionnis required for TNT that is -3406kJ/mol whuch is comparatively lower.
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Which use of land is most likely to result in erosion?
A. applying compost to soil to feed life
B. plowing fields parallel to a hillside
C. planting vegetation along a hill
D. leaving large stretches of land undeveloped
caffeine is the active ingredient in coffee, tea, and some carbonated beverages. add lone pairs, as needed, to the structure of caffeine.
Here we add lone paris,to the structure of caffeine.
What is caffeine?Caffeine is a type of drug. It is used as a cognitive inhancer.
We've been looking at then following structure. We definitely would like to look at it is the geometries of some of the centers. We'll look to it geometry here. Yes, yeah. Down here as well. We have a bonding angle of less than 107.5 because we have a trig onal planer with a bonding angle of 120. This is the site has a geometry with all the bounding angles of 109.5. it is the funding angles of less than 107.5 carbon site here and less than 120 carbon site of here are the tribunal to the parameters. My substitute if luck with the has the same geometry with bonding angles as before.
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HELP ASAP PLEASE CHEMISTRY!!!
Answer:
3MgI2 + Fe2S3 -> 3MgS + 2FeI3
Reaction Type
1.Double Displacement
2.Oxidation-Reduction
In what industries are electron microscopes used today?
Explain
Answer:
Aeronautics, automotive, apparel, and pharmaceutical industries.
Explanation:
Other industries that may commonly use electron microscopes as a part of their production process include aeronautics, automotive, apparel, and pharmaceutical industries. Electron microscopy can also be applied in industrial failure analysis and process control of diverse industries.
as the atomic number for elements on the periodic table increases, the number of electrons in neutral atoms of the elements______.
Yo help a brother out you don’t want me to fail right
a. The names for the compounds in the task above are given below:
Fe2O3: Ferric oxide NiCl: Nickel chloride Co3P: Cobalt (II) phosphide Co3N2: Cobalt (II) NitrideAg2S: silver silver sulfideFeCl2: Iron(II) chlorideFeCl3: Iron(III) chlorideHNO3: Hydrogen trioxonitrate VH2CO3: Hydrogen trioxocarbonateIVb. The correct formulas for the compounds in the problem above are:
Copper (II) sulfide: CuSMecury (IV) chloride: HgCl2Iron (I) nitride: Fe2NZinc (II) bromide: ZnBr2Vanadium (V) oxide: V2O5Silver (III) phosphide: Ag3PNickel (II) sulfide: NiSHydrofluoric acid: HF.What is meant by the formula of a chemical compound?The formula of a compound is the chemical representation of chemical substance. The symbols of the individual elements which forms the compound is used in analysing the chemical formula of particular compund.
From the task given above, HNO3 is a compound which is formed by hydrogen, nitrogen and oxygen and their symbols are used to form the formula.
In conclusion, it can be deduced from the explanation given above that the formulae of chemical species is used to represent chemical equation.
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What is mAngleMHJ?
A boron atom contains 6 neutrons. This isotope of boron will have
protons and a mass number of
Answer: 5 and 11
Explanation:
protons= 5
neutrons=6
mass number= 6+5=11
according to the uncertainty principle, as you localize a wave in time, you become more uncertain about its:_____.
Answer:
position
Explanation:
cant know both at the same time
what kind of problems can you foresee if every speck of carbon were turned into biomass? why?
Since there wouldn't be sufficient carbon in the environment for plant to carry out biological processes, life would die.
Who or what makes up carbon?The nucleus of a carbon atom is made up of six protons and six neutrons, and it is encased in six electrons. According to quantum physics, the first two electrons must occupy the innermost atomic orbital, while a wavefunctions of the following four electrons only partially fill the secondary standard and 3-second principal orbitals.
What products uses carbon?Coal, methane gas, & crude oil are all utilized as fuels. It is employed to create a wide range of products, including polymers and steel alloys. Even black ink for printing and painting is produced with it.
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if the total atmospheric pressure is 1 atm, and it suddenly drops to 10% oxygen, then can you survive?
The option C , Yes ,if you hurry up and adapt (acclimate) within 2 minute holding your breath is correct answer.
The right amount of oxygen in blood is important. Too little oxgen and much oxgen are both harmful to health. Therefore, the body ciontrols and regulatesthe amount of oxygen in blood at all times ,and the levelof oxygen in blood drops too low , the condition is called hypoxemia.
The option A, say sudden drops (10%) of oxygen is not sustainable, it is wrong because of the decrease of oxgen level it create the breathning problem.
The option B,yes there is still lots of oxygen around, this option is correct the oxygen variation made many heath issues,but the option C is good answer for this question.
Option A is corect, countercurrent exchnge,,the two fluid moves in opposite direction with different heat,the maximum amount of heat transfer that can be obtained is higher incountercurrent, The countercurrent exchange is most suitable for urine purification,
Option B ,is wrong Concurrent exchange is two fluids moves in same direction it not gives 100%f freshwater
Urine treatment ; Heating the urine to evaporate the water and leaves the salt behind. The water vapor would then move to a condenser and be condensed as purified water .The salt remain, forming a brine solution with some of the remaining water. The brine would have to be recovered or thrown away periodically. this process would requires a lot of power to heat all the water boiling and to then cool the water vapor sufficiently to condensed it.
Option C: wrong Reverse osmosis.Using high pressure cross a very fine fitter or membrane to purify water.The water is separated from the salt Brine is created from the concentrated salt that have to be recoveredor periodically thrown away. This technology is often used in aridregion to convert and purify sea water into portable water.
Hence the option C is correct
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Click oil basics and use the information to complete this passage that discusses how plastic production affects society.
the production of plastics makes life____, so it benefits society. on the other hand, the production of plastics causes land and water____, so it also harms society.
Easier and pollutuion are correct answer of this question . Click oil basics and use the information to complete this passage that discusses how plastic production affects society.
What is Pollution?
Pollution, also known as environmental pollution, is the addition of any material (solid, liquid, or gas) or energy (such as heat, sound, or radioactivity) to the environment at a rate greater than it can be dispersed, diluted, decomposed, recycled, or stored in an innocuous form. The three basic sources of pollution—air, water, and land—are frequently categorised according to their effects on the ecosystem. Modern society is also concerned about certain types of pollution, such as plastic, light, and noise pollution. The environment, wildlife, and human health are all routinely negatively impacted by pollution of many forms.
Therefore, pollution can be defined simply as something that contaminates the environment. Pollution is the presence of dangerous compounds in the air, land, and water that can harm both living things and the environment. referring to dangerous substances that are released or brought into the environment, such as hazardous gases, liquids, or other poisonous materials. Pollutants, contaminants, or dangerous chemicals are other factors that contribute to the environment's unsuitability or safety, as are poisonous materials that contaminate the soil and the air. Pollution is another unavoidable side consequence of actions that disturb the ecosystem's biodiversity. Additionally, it jeopardises the environment's ability to endure.
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first, alex dose an exprerimen wich she fills 2 cups with cold liquid at the same tempeture: 1 with the new lid she finds that the liquid in one cup warmed up more than the liquid in the other cup after 10 minuts wich cup do yo think it wermed up more why
The temperature of liquid in a cup with a lid changes less than in a cup without a lid.
How does a lid affect the temperature of liquid inside the cup?It is well known that in a closed system, neither heat nor matter will be transferred from the system to the environment. In contrast, in an open system, energy and heat are exchanged from the system to its surroundings and vice versa.
Cup with the lid (cup A) is a closed system in this situation, but Cup without lid (cup B) is an open system. Therefore, there won't be any heat or material transfer from cup A to the system or surroundings. As a result, cup B warm up slowly.
We can conclude that cup with lids are able to keep liquid cool better than the cup without the lids. Therefore, after 10 minutes the liquid in the cup without lid will be more warmed up.
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alkenes can be used as substrates in polymer synthesis. consider cationic polymerization and determine which substitution pattern would be the best substrate?
Cationic polymerization is a form of chain-growth polymerization used in chemistry, in which a cationic initiator charges up a monomer before it reacts.
What are they Cationic and anionic polymerization?The two different forms of chain-growth polymerization reactions utilized to create various types of polymers are anionic polymerization and cationic polymerization. Both of these reactions have the same reaction mechanism, however they have distinct reaction initiators.
What separates cationic from anionic substances?Ions with a positive charge are called cations . Anions are negatively charged ions that have gained one or more electrons, resulting in having more protons than electrons.
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A given sample of n2 gas has a pressure of 0. 30 atm at 30. 0 °c. If the volume is 2. 0 l, how many moles of n2 are present?.
The number of mols of N2 present 0.3 atm pressure and 30 °C is 0.0781 mol
What are mole?
The term "mole" (also spelled "mole") refers to a standard scientific unit for measuring large quantities of extremely small objects like atoms, molecules, or other specific particles. The mole represents 6.02214076 10^23 units, an astronomically large number.
At STP, which is denoted as 0°C (273.15 K, 32°F), the molar volume of a gas is 22.414 L/mol. By calculating the moles of nitrogen in 1.75 L at STP using dimensional analysis we get
1.75 L N2 divided by 1 mole per 22.414 L equals 0.0781 mol.
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6. how does a non polar column separate mixture of compounds and how does a polar column separate mixture of compounds
The capacity of stationary phases used in high performance liquid chromatography (HPLC) to distinguish between polar column and nonpolar chemicals can be used to classify them.
In HPLC, how do you distinguish polar compounds?Extremely polar chemicals, which are difficult to separate under reversed-phase conditions, can be retained and separated successfully using hypercarb columns. This application has shown that: Polar chemical retention is good in hypercarb columns. The techniques created on Hypercarb columns are solid.
How can you distinguish between polar and nonpolar bonds?(We define a bond to be polar if there is a difference between the electronegativity of the atoms in the bond that is more than 0.4. The bond is effectively nonpolar if the difference in electronegativity is smaller than 0.4.) The molecule is nonpolar if there are no polar bonds.
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What effects does a dysfunctional nervous system have on other systems of the body? Provide at least one specific example.
Considering the nervous system is the "control center" of the human body, without a functioning nervous system, there would be no way for signals to reach other organ systems in the body. An example of this can be seen with the muscular and skeletal systems. If the brain is unable to send out signals to these two organ systems, then they would cease to move or even stand up straight. Say if you were to break your spinal cord, there would be no way for the brain reach your leg muscles because the nerves in your spine are now damaged and can therefore not carry out signals from the brain.
Which of the following mixtures would result in the pK, of the acid being obtained from a direct pH
measurement of the resulting solution?
A. 25 cm³ 0.1 mol dm^-3 HCl and 25 cm^3 0.1 mol dm^-3 NaCl
B. 25 cm³ 0.1 mol dm^-3 NaOH and 25 cm³ 0.1 mol dm^-3 CH3COOH
C. 12.5 cm³ 0.1 mol dm^-3 CH3COOH and 25 cm³ 0.1 mol dm^-3 NaOH
D. 12.5 cm³ 0.1 mol dm^-3 NaOH and 25 cm³ 0.1 mol dm^-3 CH3COOH
The mixtures would result in the pk, of the acid being obtained from a direct pH measurement of the resulting solution is 25 cm³ 0.1 mol dm⁻³HCl and 25 cm³ 0.1 mol dm⁻³ NaCl. Therefore, option A is correct.
What is pH ?The pH scale, which previously stood for "potential of hydrogen," is used to describe how acidic or basic an aqueous solution is. The pH values of acidic solutions are lower than those of basic or alkaline solutions.
The pH scale determines how acidic or basic water is. The range is 0 to 14, with 7 representing neutrality. Acidity is indicated by pH values below 7, whereas baseness is shown by pH values above 7. In reality, pH is a measurement of the proportion of free hydrogen and hydroxyl ions in water.
A solution's pH is a significant indicator of its chemical composition. The pH can affect how readily available nutrients are, how biological processes work, how bacteria behave, and how chemicals behave.
Thus, option A is correct.
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Analyze the weather map. Which of the following best describes the weather in Olympia, Washington (where the black arrow is pointing)?
A. high - pressure system and a warm weather front
B. high - pressure system and a cold weather front
C. low - pressure system and a cold weather front
D. low - pressure system and an occluded weather front
(Please help it's a TGA)
Answer: low - pressure system and a cold weather front
Explanation: because if you look at the map on where the black arrow is pointing you will see blue triangles that indicates a cold front and you will also notice that there is a big red L that L means low pressure, therefore the answer is low - pressure system and a cold weather front. please correct me if i'm wrong. ( i also just finished this same TGA in k12 and this was the answer)
i really hope this helps and have a great day.
A weather map, commonly referred to as a synoptic weather chart, shows different meteorological features across a certain area at a particular time and contains different symbols with different meanings.
What is Weather map ?The Weather Map is a weather forecaster's fundamental tool. The distribution patterns of atmospheric pressure, wind, temperature, and humidity at various levels of the atmosphere are shown on the weather map.
Weather maps depict what the weather will be like in a specific location today and over the next few days.A chilly weather front with a low-pressure system.The answer is a low-pressure system and a cold weather front because if you look at the map where the black arrow is pointing, you will see blue triangles that indicate a cold front and you will also note that there is a big red L that L means low pressure. If I'm mistaken, kindly correct me.To know more about Weather map please click here ; https://brainly.com/question/26255452
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for each acid-base reaction, determine whether the equilibrium favors the starting materials or the products. click on the side of the reaction, which is favored.
Stronger/stronger weaker/weaker is indeed the reaction that is energetically preferred because acids and bases are conjugates, where the stronger acids is on the same side as that of the stronger base.
Equilibrium inside an acid-base reaction favors what?In acid-base processes, equilibrium is always in the favor of the weaker side.The pKa values for the compounds functioning as acids are displayed beneath their structures in the example below.Because the weaker acid and base are on the left, equilibrium is in the favor of the left.
How is the path of an acid-base balance determined?Finding the pKa for the acid on the left and deducting it from it allows us to utilize our pKa values to anticipate the point of equilibrium.
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how many milliliters of a 12 m nitric acid solution are needed for a reaction that requires 4.50 mol of h ?
215 ml is needed for a reaction that requires 4.50 mol of h
What is molarity?
The method of figuring out how much of a material a certain chemical solution contains is known as molecularity, sometimes known as the molar concentration of a solution. It is measured by taking into account two indications, namely the volume of the solution and the quantity of solute molecules. Essentially, the volume of the solution is determined in liters. The letter "M" stands for molarity.
According to the given information:
Make use of the equation molarity = amount of moles / number of litres.
Rearrange the equations to read: no. of moles = no. of litres x molarity and no. of litres = no. of moles / molarity.
There are (0.215 x 1) = 0.215 moles of HCl in 215 ml of 1 M HCl (aq).
The volume of 12 M HCl (aq) containing 0.215 mol of HCl is equal to (0.215/12) = 0.0179 litre or 17.9 ml.
As a result, you would use 17.9 ml of 12 M HCl, which you would then dilute with water to get a total volume of 215 ml
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draw the organic product formed when 1−hexyne is treated with h2o, h2so4, and hgso4. click the draw structure button to launch the drawing utility.
2-hexanone will be formed after 1−hexyne is treated with h2o, h2so4, and hgso4.
What are organic molecules?
In chemistry, organic compounds are generally any chemical compounds that contain carbon-hydrogen or carbon-carbon bonds. Due to carbon's ability to catenate (form chains with other carbon atoms), millions of organic compounds are known. The study of the properties, reactions, and syntheses of organic compounds comprise the discipline known as organic chemistry. For historical reasons, a few classes of carbon-containing compounds (e.g., carbonate salts and cyanide salts), along with a few other exceptions (e.g., carbon dioxide, hydrogen cyanide), are not classified as organic compounds and are considered inorganic. Other than those just named, little consensus exists among chemists on precisely which carbon-containing compounds are excluded, making any rigorous definition of an organic compound elusive.
Although organic compounds make up only a small percentage of Earth's crust, they are of central importance because all known life is based on organic compounds. Living things incorporate inorganic carbon compounds into organic compounds through a network of processes (the carbon cycle) that begins with the conversion of carbon dioxide and a hydrogen source like water into simple sugars and other organic molecules by autotrophic organisms using light (photosynthesis) or other sources of energy. Most synthetically-produced organic compounds are ultimately derived from petrochemicals consisting mainly of hydrocarbons, which are themselves formed from the high pressure and temperature degradation of organic matter underground over geological timescales. This ultimate derivation notwithstanding, organic compounds are no longer defined as compounds originating in living things, as they were historically.
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