Physical and Chemical Changes

What causes the chemical change when bread is baked?

• The ingredients mixed together
• The flour
• The increased temperature
• The shaping

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

What is burning?

• physical change
• physical property
• chemical change
• chemical property

What is digestion?

• caused by temperature
• chemical change
• physical change
• property of matter

One cup of water is left outside for two days when it was checked there was only half a cup left. What happened?

• evaporation; chemical change
• condensation; physical change 
• evaporation; physical change
• condensation; chemical change

What happens when water freezes?

• ice is formed; chemical property
• cold water is formed; physical change
• ice is formed; physical change
• cold water is formed; chemical change

A change in a state of matter is represented in the diagrams below. Which statement describes the process occurring from beaker 1 to beaker 2?

• Solid ice is changing into gas.
• Liquid water is changing to gas.
• Solid ice is melting to liquid water.
• Gaseous steam is condensing to solid ice.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The diagram below shows changes happening to water in a specially shaped bottle.  What changes did the water undergo? 

• melting and then freezing
• freezing and then evaporation
• condensation and then melting
• evaporation and then condensation

A chemical change creates a _________. 

• change in volume
• new substance
• mixture
• solution

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

___________ is the amount of space that an object takes up. 

• volume
• space
• room 
• density

Which is a physical change?

• burning match 
• vinegar in baking soda 
• melting butter
• cooking an egg