1) Which statement describes the relationship between thermal energy and particle movement? A)There is an indirect relationship: as thermal energy increases, there is more particle movement.
B) There is an indirect relationship: as thermal energy increases, there is less particle movement.
c) There is a direct relationship: as thermal energy increases, there is more particle movement.
d) There is a direct relationship: as thermal energy increases, there is less particle movement.

2) What is something a scientist could add to or subtract from an unknown substance that will always reveal information about the physical and/or chemical properties of the substance?
A) light
B) heat
C) vinegar
D) iodine

3) A student thinks she might have accidentally mixed up her sugar and her salt and put them in the wrong containers. The crystals look similar and have no smell. Which test can the student run to determine which one is sugar and which one is salt?
A) Benedict’s test
B) indicator test***
C) iodine test
D) vinegar test

4) The expression “like a ton of bricks” means “very hard.” Would being hit by an actual ton of bricks hurt if it happened on the moon?
A) No, it would not hurt as much because the bricks would have less mass.
B) Yes, it would hurt because the bricks would still have the same weight.
C) Yes, it would hurt because the bricks would still have the same mass.
D) No, it would not hurt as much because the bricks would have less weight.

5) Which measurement is affected by gravity?
A) mass
B) inertia
C) weight***
D)density

6) What happens to the density of a material if you have a larger piece of it?
A) The density will remain the same because mass and volume will both increase in the same way.
B) The density will be greater because the mass increases but the volume remains the same.
C) The density will be smaller because the mass remains the same as the volume increases.
D) The density will remain the same because mass and volume will remain the same.
7) Which phases does water go through if you use distillation to separate it from dissolved sugar?
A) from a liquid to a gas, and back to a liquid
B) from a liquid to a solid, and then to a gas
C) from a solid to a liquid, and then to a gas***
D) from a liquid to a solid, and back to a liquid

8) Which statement is a good description of plastic?
A) It is a natural material that is made from synthetic resources.
B) It is a synthetic material that does not come from natural resources.
C) It is a synthetic material that comes from natural resources.
D) It is a natural material made from natural resources.

9) A student states that natural resources could be saved if people made everything they need in labs. What is the main problem with this idea?
A) There are not enough synthetic resources yet to make what people need.
B) Anything made in the lab requires natural resources to produce it.
C) People might think it is fine to waste a lot of the materials since they just came from a lab.
D) The materials made in labs will still pollute the environment and destroy natural resources.

10)What is the Great Pacific Garbage Patch?
A) a place on the Pacific Coast with a large plastic recycling facility
B) a place on the Pacific Coast where plastic waste from the ocean has collected on beaches
C) a place where plastic and other waste has collected in the Pacific Ocean
D) a place where people who live near the Pacific Ocean have collected plastic in one place

11) In one to two sentences, explain a similarity and a difference between the particles in liquid water at 100ºC and the particles in steam at 100ºC.
I HAVE NO IDEA ABOUT THIS ONE!

12) You overhear a friend saying, “Plastic is the worst thing that humans have ever invented.” In four to five sentences, explain whether you agree or disagree with your friend’s statement. Be sure to include facts that show the range of impacts that plastic has on human society and the environment. what i wrote:
I agree with his/her statement! Plastics have a ton of chemicals like BPA (bisphenol-A) which is cancerous and harmful. Even the making of it is harmful. The machines they use to make plastic release pollution in our Earth. Plastic is extremely wasteful and is super harmful to marine life as well. Turtles and other marine life have mistaken it for food. Not to mention in order to make plastic they strip the earth of nonrenewable sources.