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100
A group of students created a model showing a type of matter.
Which of the following best describes what is shown by the model?
a. Particles that make up a liquid
b. Particles that make up heat
c. Particles that make up a specific color
d. Microscopic pieces of ice inside a glass of water
a. Particles that make up a liquid
100
A glass of saltwater is sitting on a table. Which of the following best describes the matter in this saltwater?
a. It is made up of only one type of molecule
b. It is made up of more than one type of molecule
c. It is not made up of any molecules
d. It is not made up of matter
b. It is made up of more than one type of molecule
100
A cook has containers with several white powders in them. She cannot tell the powders apart by looking at them. Which of the following would best help her determine the properties of each powder?
a. Smell each of the powders
b. Test if they dissolve in certain liquids
c. Taste each of the powders
d. All of the above.
b. Test if they dissolve in certain liquids
100
Which of the following is made of atoms?
a. gravity c. light
b. heat d. air
d. air
200
Deshawn has a glass of water. After he adds a few drops of black dye to it, he can see black swirls in the water. After a while, all of the water is gray.
If you could zoom in to see what the water and dye are made of, which set of models best shows how the water turned gray?
200
Harley and Zechariah have two white materials made up of crystals. They need to figure out whether they are the same or different. What observations would be useful for determining whether they are the same material? Select 2 answers.
a. The size of the crystals
b. Whether adding vinegar makes bubbles
c. The weight of the material
d. The temperature at which it melts and turns into a liquid
e. Whether the material dissolves in water
b. Whether adding vinegar makes bubbles
e. Whether the material dissolves in water
200
Jaylon believes that Rocks 1 and 4 are made of the same material. What data best supports his conclusion? Select 3 answers.
a. Rocks 1 and 4 scratch glass
b. Vinegar does not make Rocks 1 and 4 bubble
c. Rocks 1 and 4 do not have large holes
d. Rocks 1 and 4 have little holes
e. Rocks 1 and 4 have the same surfaces
a. Rocks 1 and 4 scratch glass
c. Rocks 1 and 4 do not have large holes
e. Rocks 1 and 4 have the same surfaces
200
Andy wants to study about substances in his science class. Which of the following would best represent a substance?
a. Cake c. Sweet tea
b. Sugar d. Cookies
b. Sugar
300
Mary fills four small containers to the top with different substances. She weighs them and makes a table to compare the results. The substances are small rocks, paper, feathers, and a small pencil.
Which substance could be the small rocks?
a. Substance 1 c. Substance 3
b. Substance 2 d. Substance 4
a. Substance 1
300
Arthur pours 1 cup of liquid water into an ice tray and then puts it in the freezer to make ice. Which of the following statements about the liquid water and the ice is accurate?
a. When the ice froze, it had the same amount of water as it did when it was a liquid.
b. When the ice froze, it gained more water.
c. When the ice froze, it had twice as much water as it did when it was a liquid.
d. When the ice froze, it lost some water in the process.
a. When the ice froze, it had the same amount of water as it did when it was a liquid.
300
The circles and dots in the boxes below represent atoms of two different elements. Atoms touching each other are considered bonded to each other and create molecules. Which box contains a mixture?
300
Carlos was asked to bring an example of a mixture to class. Which of these would best represent a mixture?
a. Salt c. Salt water
b. Sugar d. Cold water
c. Salt water
400
Emily is making hot chocolate. She pours the hot chocolate powder into a glass of milk, mixes it, and then heats it up in the microwave. Emily claims that since she can no longer see the powder after it has been mixed, it must no longer be there.
Which of the following would not support Emily’s claim, and instead, show that powder is still in the mixture?
a. The weight of the powder plus the weight of the milk is less than the weight of the mixture.
b. The weight of the powder plus the weight of the milk is more than the weight of the mixture.
c. The weight of the milk is equal to the weight of the mixture.
d. The weight of the powder plus the weight of the milk is equal to the weight of the mixture.
d. The weight of the powder plus the weight of the milk is equal to the weight of the mixture.
400
Jeremoni poured two different substances together in a glass beaker. Below are her observations both before and after she mixed these substances.
Jeremoni makes a claim that a new substance formed as a result of mixing these two substances. What evidence from the data best supports this argument?
a. The new substance had different properties.
b. The new substance stayed the same temperature.
c. The new substance remained the same color.
d. There is no evidence to support Jeremoni’s claim.
a. The new substance had different properties.
400
Ava is learning about dissolving in her class. When she got home, she mixed different substances together to see if dissolving would happen. Which of the following best describes materials mixing and dissolving?
a. Oil and water are placed in a sealed bottle and shaken causing the oil to float to the top.
b. Salt and sand are added to hot water and stirred making the salt disappear.
c. Sugar and water are added to flour and cooked in an oven making a cake.
d. Soil and water are shaken in a container forming sediment.
b. Salt and sand are added to hot water and stirred making the salt disappear.
400
The picture below is of a plastic block. A plastic block is matter.
Which of the following best explains what the small circles show?
a. Matter is made of atoms too small to see.
b. Matter is made of large pieces that are easy to see.
c. Matter is made of drops of water.
d. Matter is made of particles of gas.
a. Matter is made of atoms too small to see.
500
Ashlyn found a container of an unknown substance in her refrigerator. She created the following table of her observations and measurements of this substance.
Which of the following questions was Ashlyn likely asking in this investigation of an unknown substance? Choose the best response based only on the data in the table above.
a. What are the properties of this substance?
b. What types of specific molecules is this substance made from?
c. What types of atoms is this substance made from?
d. What are the types of matter that make up this substance?
a. What are the properties of this substance?
500
Which tests do you think will help to determine whether the sugar is still in the mixture of sugar water? Select 2 answers.
a. Mix the sugar with cold water and hot water.
b. Add more sugar to the water, and observe what happens.
c. Weigh the sugar and water separately before they are combined; after they have been combined, weigh the solution.
d. Have more students taste the material, and collect their observations.
e. Remove the water by letting the container sit until all of the water evaporates.
c. Weigh the sugar and water separately before they are combined; after they have been combined, weigh the solution.
e. Remove the water by letting the container sit until all of the water evaporates.
500
Jill has a salt solution that looks clear. When she lets several drops of the solution evaporate, she sees white crystals left over. Which of the following conclusions can she make?
a. The salt solution is made up of tiny particles that cannot be separated.
b. The salt solution is made up of large particles that cannot be separated.
c. The salt solution is made up of tiny particles that cannot be seen with the eye.
d. The salt solution is made up of large particles that cannot be seen with the eye.
c. The salt solution is made up of tiny particles that cannot be seen with the eye.
500
Beth added a piece of metal to a test tube that contained an acid. She observed bubbles forming on the surface of the metal. What does the formation of bubbles in this experiment show?
a. Reaction with the acid caused the metal to burn up.
b. The metal caused the acid to go through a physical change.
c. The metal reacted with the acid to form a new substance.
d. Reaction with the acid to form an old substance.
c. The metal reacted with the acid to form a new substance.