Modeling Matter

A glass of saltwater is sitting on a table. Which of the following best describes the matter in this saltwater?

• It is made up of only one type of molecule.

• It is not made up of any molecules.

• It is made up of more than one type of molecule.

• It is not made up of matter.

Tags

NGSS.MS-PS1-1

A teacher wants to make a model to show her students that gas is a type of matter. Which of the following would best show this to the students?

• a beaker of sand absorbing water

• an ice cube melting

• a pot of liquid bubbling

• a balloon filled with air and then letting it out

Pria 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 Pria likely asking in this investigation of an unknown substance? Choose the best response based only on the data in the table below.

• What are the properties of this substance?

• What types of specific molecules is this substance made from?

• What types of atoms is this substance made from?

• What are the types of matter that make up this substance?

Tags

NGSS.MS-PS1-1

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 help her determine the properties of each powder?

• smell each of the powders

• taste each of the powders

• test if they dissolve in certain liquids

• All of the above

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?

• Substance 1

• Substance 2

• Substance 3

• Substance 4

Tags

NGSS.MS-PS1-2

LaToya 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. LaToya 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 LaToya’s claim, and instead, show that the powder is still in the mixture?

• The weight of the powder plus the weight of the milk is less than the weight of the mixture.

• The weight of the powder plus the weight of the milk is more than the weight of the mixture.

• The weight of the milk is equal to the weight of the mixture.

• The weight of the powder plus the weight of milk is equal to the weight of the mixture.

Tags

NGSS.MS-PS1-5

Yong 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?

• When the ice froze, it had the same amount of water as it did when it was a liquid.

• When the ice froze, it gained more water.

• When the ice froze, it had twice as much water as it did when it was a liquid.

• When the ice froze, it lost some water in the process.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Derrick 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 grey?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

Julie and Michael 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? Choose all that apply.

• the size of the crystals

• the weight of the material

• whether the material dissolves in water

• whether adding vinegar makes bubbles

• the temperature at which it melts and turns into a liquid

Tags

NGSS.MS-PS1-4

A group of atoms joined together in a particular way:

• property

• soluble

• molecule

• dissolve

Tags

NGSS.MS-PS1-1