What are three phases that are observable in everyday life?

• liquid, gas, solid

• liquid, fire, gas

• gas, solid, dirt

• liquid, air fire

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What happens during evaporation?

• solid to liquid

• gas to liquid

• liquid to gas

• liquid to solid

Tags

NGSS.MS-PS1-4

What is the melting and freezing point of water?

• 32^oC

• -32^oC

• 0^oC

• 100^oC

Tags

NGSS.MS-PS1-4

Knowing the boiling and freezing points of substances will help you

• identify unknown substances

• destroy substances

• create substances

• burn things

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Boiling and melting points are properties of a substance. There are many other properties (characteristics) of substances. Which of the following is NOT a property?

• density

• mass

• color

• conductivity (ability to conduct electricity)

Tags

NGSS.MS-PS1-4

What phase has the slowest moving molecules and the molecules most packed together?

• solid

• liquid

• gas

When you are adding heat you are...

• decreasing energy

• increasing energy

• creating energy

• keeping energy the same (homeostasis)

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

By increasing energy to a liquid, it will become a...

• solid

• liquid

• gas

• hot chocolate

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the cause of phase change?

• change in pressure

• change in mass

• change in volune

• change in heat energy (thermal energy)

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

At what phase are molecules the most spaced apart and moving their fastest?

• solid

• liquid

• gas