Jennifer and Cody are mixing substances during a lab experiment. They observe the four effects listed below. Which of these effects indicates that a chemical reaction has taken place between two substances?
A pink powdered substance turns water pink when they are mixed together.
A piece of shiny metal begins to bubble when placed in a clear liquid.
A white solid disappears when mixed with water.
A clear, lemon-scented liquid continues to smell like lemon when it is mixed with water.
Answer:
number 2
Explanation:
The ___ of this mineral is conchoidal; its breakage resembles the ripples of a mussel shell.
Answer:
Conchoidal Fracture
Explanation:
10 points!!! PLEASE HELP I WILL GIVE BRAINLIEST TO CORRECT ANSWER WITH EXPLANATION!
The table below shows two types of electromagnetic waves and three random applications of electromagnetic waves.
Type of Wave Applications of Wave
X-rays 1. Show the heat released by astronomical objects
Ultraviolet rays 2. Study stars having high temperature
3. Detect collection of gas, dust, and plasma
Which of these best matches the waves with their applications?
Select one:
a. X-rays—2 and ultraviolet rays—3
b. X-rays—3 and ultraviolet rays—2
c. X-rays—1 and ultraviolet rays—2
d. X-rays—2 and ultraviolet rays—1
Answer:Answer is C
Explanation:
Answer:
C
Explanation:
The author of Space Systems: All About Eclipses makes the point that seeing a total solar eclipse is rare. How does the author use evidence to support this point?
A. The author describes how often, on average, a solar eclipse happens in the same spot on earth]
B. The author shows what happens during a lunar eclipse.
C. The author provides a visual that shows how often total solar eclipses happen
D. The author states that lunar eclipses happen at night.
Answer:
C is the correct answer I think
What is the literal meaning of the term "Binomial Nomenclature?" What taxonomic levels are included in a scientific name? Why is it beneficial to use the scientific name of an organism?
PLS HELP UNIT TEST SCIENCE
Answer:
Binomial nomenclature definition is - a system of nomenclature in which each species of animal or plant receives a name of two terms of which the first identifies the genus
Explanation:
Why is it beneficial to use the scientific name of an organism? The binomial nomenclature has a number of advantages over using the common names.
What taxonomic levels are included in a scientific name? The Taxonomic levels, are a way of classifying species. In taxonomy, there are eight levels: domain, kingdom, phylum, class, order, genus and species.
When a plant bends to get more sunlight, which of these characteristics of life is it. A demonstrating?
B respiration
C reproduction
D sensitivity
E excretion
I NEED HELP ASAP!!! PLEASE!!!
The table below shows two types of electromagnetic waves and three random applications of electromagnetic waves.
Type of Wave Applications of Wave
X-rays 1. Show the heat released by astronomical objects
Ultraviolet rays 2. Study stars having high temperature
3. Detect collection of gas, dust, and plasma
Which of these best matches the waves with their applications?
Select one:
a. X-rays—2 and ultraviolet rays—3
b. X-rays—3 and ultraviolet rays—2
c. X-rays—1 and ultraviolet rays—2
d. X-rays—2 and ultraviolet rays—1
Answer:
C
Explanation:
no link need right answer
Explanation:
Advantage of coal
1) It is easy to burn.
Disadvantages of coal
1) The use of coal releases sulfur dioxide ,a harmful substance linked to acid rain.
Advantage of natural gas
1)Natural gas is nonrenewable resource.
Disadvantages of natural gas
1)Natural gas is toxic.
Advantage of nuclear
1)Nuclear energy is reliable.
Disadvantages of nuclear
1)It also has one of the smallest carbon footprints.
Advantage of hydroelectric
1)Hydroelectric energy the most commonly used renewable energy source in the world.
Disadvantages of hydroelectric
1)It is expensive.
Advantage of petroleum
1)It is a high density fuel.
Disadvantages of petroleum
1)petroleum is thick and flammable which is why it make such efficient resource for fuel .
Advantage of solar wind
1) It will give us cold air.
Disadvantages of solar wind
1)A lot of electricity bill.
PLZ HELP! WILL GIVE BRAINLIEST, 5 STARS, AND A THANKS!!
What are the similarities between "boiling" and "condensation"?
**Explain your thinking below using quotes from the text.**
~You will get reported if you answer with something else~
PLZ HELP! WILL GIVE BRAINLIEST, 5 STARS AND A THANKS!!
What is the relationship between "freezing point" and "melting point"?
**Explain your thinking below using quotes from the text.**
~You will get reported if you answer with something else~
Answer:
The freezing point of a substance is the same as that substance's melting point. At this particular temperature, the substance can exist as either a solid or a liquid. At temperatures below the freezing/ melting point, the substance is a solid.
Explanation:
edge 2021
Answer: The relationship between freezing point and melting point is that freezing point is at the temperature of when a liquid freezes and melting point is at the temperature when a solid melts which are both at the same temperature
Some quotes from the text to support this is that: "Freezing point is the temperature at which a liquid freezes and melting point is the temperature at which a solid melts.
How is the King Midas story related to chemistry?
Answer:
After conducting further archaeological research on the tomb, Rose concluded the clothing on Midas was treated with a chemical. The chemical made the clothing look golden, and he hypothesized this is why Midas is known as the king with the golden touch.
Explanation:
this has nothing to do with the question but real quick I've just got to say this...
JUST BECAUSE FORTNITE HAS A SKIN ON IT DOES NOT MEAN FORTNITE MADE IT!
I'm not sure what the answer is but i think it's F please tell me kf i'm right or not.
Answer:
I think it might be 'F'
Explanation:
Because lobsters do eat snails so try 'f'
Imagine that scientists have found a planet with an outer layer divided into plates made of hard, solid rock, but the mantle below the plates is made of hard, solid rock instead of soft, solid rock as it is on Earth.
Do you think plate motion would take place on that planet? Why or why not?
The layer of planets is made of crust, mantle, and core. The tectonic plate motion on the newly found planet will not occur as it has a hard and solid mantle.
What are tectonic plates?Tectonic plates are defined as sold rocks that make up the mantle layer of the lithosphere of the planet. They are massive and irregular in shape that can move under high pressure and temperature conditions to form mountains and landscapes.
The plate tectonic of the planet is composed of hard, solid rock that will not be able to move or solid like that of Earth as they are hard enough to show the movement of sliding over each other unlike the soft, solid rock of Earth's lithosphere.
Therefore, the plate tectonic of the planet with hard, solid rocks will not show any movements.
Learn more about tectonic plates, here:
https://brainly.com/question/28259981
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Respiration occurs in humans when an egg cell from a female combines with a sperm cell from a male. True or false?
true
false
[tex] \huge \bold \pink{Question}[/tex]
Respiration occurs in humans when an egg cell from a female combines with a sperm cell from a male. True or false?[tex] \huge \bold \pink{Answer}[/tex]
FalseAnswer:
im pretty sure its false, i think its Fertilisation that occurs
Explanation:
Which of the following is an example of the characteristic of movement?
1 The kitten shivers like she’s cold.
2 The moss on the rock is active even though it looks still.
3 Animal kidneys produce urine.
4 Nutrients provide living organisms with energy to manage other life processes.
PLZZZ DO NOT PUT LINK TO ANSWER
Blink your eyes. Was work done? Explain your answer in 1 paragraph.
I'm talking about the scientific type of work.
Random answers will be reported.
Answer:
Yes work was done because it takes many muscles to blink. I didn't put it in a paragraph bc I already answered this once.
Explanation:
In order to perform an experiment, a chemist needs an element that has similar properties of sodium (Na) but has a lower atomic mass. Which element should the chemist select for the experiment?
A. Rubidium (Rb)
B. Potassium (K)
C. Lithium (Li)
D. Calcium (Ca)
2C4H10 + 13O2 --> 8CO2 + 10H2O
Which is true about the reaction shown above?
The reaction has two elements that combine to form a compound.
The reaction releases energy.
The reaction is a single replacement.
The reaction has negative ions in two of the compounds that switch places.
Pls help me with this question!!
Answer: A
Explanation:
PLZ HELP! WILL GIVE BRAINLIEST, 5 STARS, AND A THANKS!!
What are the similarities between "freezing" and "condensation"?
**Explain your thinking below using quotes from the text.**
~You will get reported if you answer with something else~
Answer:
The similarities between freezing, and condensation is, the stimulis.
Explanation:
The explanation to that is because the condensation will melt.
what do ammonium ion, and hydroxide ions make if put together
Answer:
They would form an ionic compound. Ammonium Hydroxide or (NH_4)(OH).
Explanation:
The underscore represents a superscript.
Any one can you help me with this from 8 to 10 all plz HURRY TO ME
Answer:
its not clear i would help u but i can't see it correctly
Explanation:
no link need right answer
Answer:
cutting down the rainforest destroys the habitat for a number of species
Explanation:
please mark this answer as brainlest
whos good at the periodic table cus im not help
Students in an art class are assigned to make a miniature animal sculpture using materials of their own choice. Students who choose copper and aluminum as the materials for their sculpture will have no difficulty bending the materials into different shapes and angles. However, students who choose wood as sculpting materials will find that the food must be cut, glued, and sanded to form different shapes because it is lacking in -
A. Conductivity
B. Luster
C. Malleability
D. Ductility
C. Malleability
can i get brainiest?
20 points and brainiest if you answer in 5 mins with the right answer
How does a convex mirror form an image?
A) It bends the light toward a focal point.
B) It bends the light away from a focal point.
C) It bounces the light toward a focal point.
D) It bounces the light away from a focal point.
Amniotic egg is an egg that contains a f fluid-filled nucleus and a yolk sac
True or False
PLS HELP THIS IS FROM A UNIT TEST
science 30 points pls help
help pls 7th grade science
Okay So Blink your eyes. Was work done? Explain your answer.
I don't need you telling me this isn't a real question also I need this kind of work so please don't put anything that isn't useful for my assignment .
In physics, work is defined as a force causing the movement—or displacement—of an object. In the case of a constant force, work is the scalar product of the force acting on an object and the displacement caused by that force. Though both force and displacement are vector quantities, work has no direction due to the nature of a scalar product (or dot product) in vector mathematics. This definition is consistent with the proper definition because a constant force integrates to merely the product of the force and distance.
Answer:
no work was needed. Blinking does not require using energy sometimes we blink without thinking.
Explanation:
Answer:
Yes work was done because muscles in your body contract and relax to make you move and blink. To just smile you use 32 or 36 muscles. The simplest movements are also sometimes to most complex.
Explanation:
A person’s genotype is pp. p=five fingers. What is this person’s phenotype?
Answer:
25
Explanation:
5×5 =25