Review

A student creates a model of an atom. The student makes a mistake. How should the student correct the mistake, and why?

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Tags

NGSS.MS-PS1-1

A researcher works to separate substances X and Y into smaller parts using chemical processes, as shown. Which substance represents a molecule?

• Y is a molecule because it cannot be separated into smaller parts

• X is a molecule because it cannot be separated into smaller parts

• Y is a molecule because it can be separated into smaller parts

• X is a molecule because it can be separated into smaller parts

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

The properties of substance X are shown in the table. How is substance X best classified?

• Substance X is a solid because it is clear and has a definite volume

• Substance X is a gas because it has an indefinite shape and has a definite volume

• Substance X is a solid because it is clear, and the particles are close to each other

• Substance X is a liquid because it has a definite volume, and the particles slide past each other

Tags

NGSS.MS-PS1-4

Peter wants to know the volume of object A. He fills a graduated cylinder with 10 mL of water and then places object A inside the graduated cylinder. He draws a before and after diagram in his science notebook. What is the volume of object A?

• 20 mL

• 15 mL

• 10 mL

• 5 mL

Tags

NGSS.MS-PS1-2

Sugar will dissolve in water, but flour will not. Which property of these two substances explains the difference in dissolving in water?

• mass

• color

• density

• solubility

Which property is best observed by using the sense of touch to describe it?

• color

• odor

• shape

• texture

Tags

NGSS.2-PS1-1

The table lists the properties of a substance. How is the substance classified?

• It is a liquid because the volume is fixed, and the shape changes

• It is a liquid because it retains mass and volume

• It is a solid because it retains mass and volume

• It is a solid because the length cannot be measured, and the shape changes

Maria fills a bowl with 200 g of water. She puts the bowl of water in the freezer, and the water freezes. Which will most likely be the mass of the frozen water?

• 50 g

• 100 g

• 200 g

• 400 g

Which example best describes a chemical change?

• wax melting

• an apple turning brown

• a piece of paper being cut into small pieces

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which is the best 
example of heat transfer 
through radiation?

• heating soup in a pot on the stove

• standing by a  campfire to get  warm on a chilly night

• burning your hand  when touching a hot pan on the stove 

• not getting burned when  touching a wooden spoon that has been in a hot pan