Physical and Chemical Changes Stemscopes Review

An increase in temperature will cause which of the following to occur:

• Water vapor in the air condensing to form clouds

• Water in a lake freezing into solid ice

• A balloon filled with air falling slowly to the ground

• A solid bar of chocolate melting and changing shape

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Autumn is teaching her sister about phase changes and wants to use an example of what would occur when heat is removed from a system. Autumn explains that removing heat will result in which of the following changes? A A gas becomes a solid. B A solid becomes a liquid. C A liquid becomes a solid. D A solid becomes a gas.

• A solid becomes a liquid

• A gas becomes a solid

• A liquid becomes a solid

• A solid becomes a gas

Tags

NGSS.MS-PS1-4

The same number of ____________that existed before the reaction exist after the reaction.

• solids

• particles or molecules

• physical changes

• density

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

This can be released during a chemical change.

• Fireworks

• Energy

• Chemical reaction

• Chemical change

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Dominic leaves a glass of water outside overnight. The next morning, the liquid has changed into a solid. Which of the following most likely caused this to occur? A Addition of heat B Addition of a gas C Removal of heat D Removal of a gas

• Addition of a gas

• Addition of heat

• Removal of heat

• Removal of a gas

Tags

NGSS.MS-PS1-4

An increase in temperature will cause which of the following?

• Water freezing

• Paper tearing

• Chocolate melting

• Ball rolling

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Adding heat will result in which of the following changes?

• Solid to liquid

• Liquid to solid

• Gas to solid

• Gas to liquid

Tags

NGSS.MS-PS1-4

Which of the following describes a chemical change to a slice of bread that is the result of heat?

• The bread is cut.

• The bread is frozen

• The bread is dropped

• The bread is toasted

Tags

NGSS.MS-PS1-4

Changes in temperature can often cause a change in the state of matter of objects. A decrease in temperature causes which of the following to happen? A Liquids will boil. B Water will freeze. C Wax will melt. D Solids will turn to gas.

• Liquids will boil.

• Wax will melt

• Solids will turn to gas

• Water will freeze

Tags

NGSS.MS-PS1-4

_____________is never destroyed or created in chemical reactions.

• density

• color

• matter

• particles

Tags

NGSS.MS-PS1-5