Chemistry Middle School

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Which objects are luminescent?

a cell phone screen
a black ball
some jellyfish
a neon sign
a computer screen
some plankton
some dogs

Answers

Answer 1

Answer:

Some Jellyfish, a neon sign, some plankton I think

Explanation:

Answer 2
some jelly fish, some plankton a neon sign and a black ball i think

Related Questions

Which best defines an invasive species?

a
A species that burrows underground.
b
A species that moves from ecosystem to ecosystem.
c
A species that lives with another species.
d
A species that is not natural to an ecosystem.

Answers

Answer:

D

A species that is not natural to an ecosystem.

Explanation:

Im pretty sure its D. a species that is not natural to an ecosystem

5. Select the best answer.
A type of matter with unique properties that is made of two or more atoms is called a(n)
particle
molecule
force
element

Answers

A molecule.This is because a molecule is made up of 2 or more elements
Molecole is the answer

When will a seed begin to germinate?
Group of answer choices

When it has water

When it has sunlight

When it has sunlight and water

When it has energy

Answers

When it has sunlight and water
1 & 2
Are the correct answer


Hope it helps :)

Which climate has subclimates with humid summers as well as subclimates with long, bitterly cold winters?
polar
tropical rainy
temperate marine
temperate continental

Answers

Answer:

temperate marine

Explanation:

this is the only climate that has mild summers, but cold winters.

Help!!!
This is the last stage and I don't want to screw this up! :(

Answers

Product reactant reactant
Product reactant reactant

You eat pizza for lunch. Which step in the digestion process causes a chemical change in the pizza?

Your teeth bite the pizza and take a small piece into your mouth.

Your stomach mixes acid and enzymes with the food to break down protein in the pizza.

Your esophagus is a tube that moves the food from your mouth into your stomach.

Your teeth grind the pizza to smash it.
IF U RIGHT,I WILL GIVE BRAINLIEST

Answers

The answer should be your stomach mixes acid and enzymes with the food to break down protein in pizza.

The pizza will begin to break down in the acid. Causing a chemical change as you digest the pizza the nutrients will be absorbed and filtered.

Your stomach mixes acid and enzymes with the food to break down protein in the pizza is a chemical change.

What is chemical change?

Chemical change is a process in which changes in the composition of any molecules takes place so that as a result of which we get new product.

Bite a pizza and take a small piece into your mouth is a physical process.Moving of food by esophagus is also a physical process.But mixing of enzymes and acids with the food to break down protein in the pizza is a chemical change.

Hence mixing of enzymes and acids is the chemical change.

To know more about chemical change, visit the below link:
https://brainly.com/question/17384175

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Pls solve this question.

Answers

Rock c is the answer
Rock c because gold is not that heavy nor to light

Please help me I will give you the brain thing and extra points.
image below

Answers

Answer:

b

Explanation:

i think the answer is b :)

The model of the atom has changed as scientists have gathered new evidence. Four models of the atom are shown below, but one important model is missing.

Which atomic model is missing from this set?

Bohr’s model
Dalton’s model
Rutherford’s model
Thomson’s model

Answers

Answer:

Daltons model

Explanation: Yww!!!

Daltons model is missing from this set

Explain why you agree or disagree with this statement
''Friction is a way to create electricity because it creates charged particles. ''

Answers

Friction actually generated friction because you create charges that are dealing with electricity. When you rub some against each other , you can create a little spark which is electricity . Friction can produce static or something because it can be transferred by two or more items .

a horizontal force of 8N being applied to an object with a mass of 4.0-kg.


**What is the blocks acceleration?

Answers

Answer:  d)

Explanation: d) What is the acceleration of the Earth due to the force of the person? ... What is the net force acting on an object that is being pulled by a force of 5 N at 30°, ... A cart having a mass of 15 kg, rolling from left to right on a horizontal surface, ... Fging -(15kg) (4,81162) 147.15 N ... 12-newton force being applied to two blocks, A.

Explanation:

2 m/ s² acceleration because you know that F= ma.

Please help with this

Answers

Type, Fossil Fuels, green house gasses

the answers are in order: coal , heat , stone , wood , soil , and water! hope this helped. sorry if i’m wrong.

is Almost everything on Earth made of molecules? True or False

Answers

Almost everything on earth is made of molecules so yes true
It is true because we have more molecules on earth rather than atoms

What is primary sucession?

a
When there are too many species in an ecosystem.
b
When a species dies out in an ecosystem.
c
When pioneer species start a new ecosystem in a lifeless area.

Answers

Answer:

C

Explanation:

Primary succession occurs when new land is formed or bare rock is exposed, providing a habitat that can be colonized for the first time.

Answer:

the answer is b hope it helps

i will give a brainlyest if you help me out and a good rating pleas i need this i am failing A number of atmospheric conditions can contribute to the change from hot and dry weather to wet monsoon weather observed during Arizona summers.

Using the information in Map 1, Map 2, and Map 3,

A.Identify two changes in atmospheric conditions where scientists should collect data to determine the cause of this change in weather.
B.Explain how the data for each change would provide information on monsoon formation.

Answers

Answer:

in the montains,

Explanation:

Atoms are all around us. Which of the following best describes atoms?
A.Specific kinds of liquids
B.Forces that are able to move objects
C.Certain gases found in space
D.Parts of matter too small to be seen

Answers

Answer:

D for sure the are baccsilly grems

Explanation:

the answer is D.Parts of Matter too small to be seen :)

Which type of rock is most likely to form because of high heat and pressure?

igneous
magma
sediment
metamorphic

Answers

Answer:

Metamorphic Rock

Explanation:

Metamorphic rocks are formed because of high heat and pressure . Metamorphic rocks form from heat and pressure changing the original or parent rock into a completely new rock. The parent rock can be either sedimentary, igneous, or even another metamorphic rock

Answer:

answer is metamorphic.......

What role do guanacos play in the Andes Mountains ecosystem? (Select all that apply.)
omnivore
secondary consumer
browser
grazer

Answers

Answer:

Browsers and grazers

Explanation:

Guanacos are browsers and grazers who have developed the ability to eat a wide variety of grasses and other plants. They also have adapted to a wide range of temperature and weather conditions.

Browser and grazer

EcosystemAn ecosystem is made up of all the species that interact with each other as well as the physical environment in which they live. Nutrient cycles and energy flows bind these biotic and abiotic components together.The Andes play an important role in national economies, accounting for a considerable portion of the region's GDP and providing huge agricultural areas, mineral resources, and water for agriculture, hydroelectricity, and residential use, as well as some of South America's largest business centers.Guanacos play a role of Browser and grazer in the Andes Mountains ecosystem

For more information:

https://brainly.com/question/13979184?referrer=searchResults

A ______________________ is expressed only if both factors are present in an organism.

Answers

A dominant phenotype will be expressed when at least one allele of its associated type is present whereas a recessive phenotype will only be expressed when both allele are of its associated type.
heterozygous i believe

what are 3 properties of soil?

Answers

Hi!
Here’s the answer

All soils contain mineral particles, organic matter, water and air. The combinations of these determine the soil's properties – its texture, structure, porosity, chemistry and colour.

iza weighs 52 lbs. on Earth. The moon has less gravity than the Earth. On the moon, Liza will weigh _____.

less than 52 lbs.
52 lbs.
more than 52 lbs.

Answers

Answer:

less then but mass is the same

Explanation:

It would be less than 52 lbs.

Imagine you weighed 200lbs. Your weight on the moon would be 33 pounds if I’m not mistaken

Please help only if you know, it is not the first answer choice! Thank you! Correct= Brainliest

Answers

Answer:

c

Explanation:

the wires are made of too many conductors

C.

If a power line were broken then power would not reach the light. Which is possible.

If a wire to the light or to the box in your house was broken your light would not receive power, therefore not turn on. Again possible.

If the power plant does not produce enough electricity, although unlikely, that would cause you to not be able to turn on your light. Unlikely but it would be true is it happened.


Finally C is not likely, your wires in your house are most likely made of copper but too many conductors in the wire, not only wouldn’t happen, but would most likely not interrupt your light working.

The question asks what is NOT a possible cause. C is the only not possible.

identify two chemicals added to treated wastewater to kill germs and disinfect

Answers

Chlorine disinfection is reliable and effective against a wide spectrum of pathogenic organisms. When chlorine gas and hypochlorite salts are added to water, hydrolysis and ionization take place to form hypochlorous acid (HOCI) and hypochlorite ions (OCI) also referred to as free available chlorine!!

Answer:

chlorine, fluorine nd sodium hydroxide

coriolis
Which of the following cause the winds to move in the bands on the diagram?

uneven heating of the Earth and the Coriolis Effect

the Earth's rotation and the Earth's revolution

location of the oceans and locations of the mountains

plate movements and high pressure systems

Answers

Answer:

Uneven heating of the Earth and the Coriolis Effect.

Explanation:

Answer:

Number 1

Explanation:

The sun unevenly heats the earth but that would just make it Have two bands insede of  4. The  coriolis effect makes it have the 4.

Please don't be mad if this is wrong

SCIENCE!!!! PLEASE HELP!!! 20 POINTS

Answers

Answer:

As the Earth rotates, it also moves, or revolves, around the Sun. ... As the Earth orbits the Sun, the Moon orbits the Earth. The Moon's orbit lasts 27 1/2 days, but because the Earth keeps moving, it takes the Moon two extra days, 29 1/2, to come back to the same place in our sky.

Explanation:

The answer above I believe is correct I was gonna say the same!!! GG

Someone fill in the blanks please

Answers

Answer: I think that the food is made from apples.

Explanation: its the most logical statment here, so.

the answer is either molly or joan

El Nino affects the people of South America by...

]
A
causing long periods of drought and famine.

B
causing tornado and tsunamis.

C
causing heavy rainfall and flooding.

D
causing wild fires to burn out of control.

Answers

Answer: C.

Explanation: El Niño cause a rise in the sea surface temperature along with strong winds, this can cause flooding.

Oh yeah I have to get to her lol and

Hi!! can someone pls help me with this question? ASAP PLS!

Answers

Answer:

1.Driving A Car That Uses Gasoline

2.Keeping Non-LED Lights On In Your House All Night

Explanation:

gardening and solar panels i think

The average kinetic energy of similar gas molecules is

Answers

It is proportional, I believe that would be your answer
Proportional I would say

NEED HELP ASAP! BRAINLIEST!!!
Describe three patterns, or trends, that exist between elements on the periodic table.

Answers

Just give the guy the brainliest :)
Electronegativities, number of electron shells, number of electrons in valence shell, atomic mass
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