Heating and Cooling

What does it mean to heat something?

• Increase the temperature

• Decrease the temperature

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

What does it mean to cool something?

• Decrease the temperature

• Increase the temperature

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Freezing is when...

• a solid becomes a liquid

• a liquid becomes a solid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Melting is when...

• a liquid becomes a solid

• a solid becomes a liquid

Tags

NGSS.MS-PS1-4

An example of cooling is...

• boiling a pot of water

• adding ice to a drink

• putting food in the microwave

• cooking an egg

Tags

NGSS.MS-PS1-4

An example of heating is...

• putting a drink in the fridge

• freezing popsicles

• going for a swim in a cold pond

• roasting a marshmallow over a fire

Tags

NGSS.MS-PS1-4

What is a reversible change?

• a change that can be undone or changed back

• a change that cannot be undone or changed back to its original form

Tags

NGSS.5-PS1-4

What is an irreversible change?

• a change that cannot be undone or changed back to its original form

• a change that can be undone or changed back

Which of the following is a reversible change?

• baking cookies

• burning a piece of paper

• melting then freezing chocolate

• rust on a bike

Which of the following is an irreversible change?

• baking a cake

• freezing a tub of ice cream

• melting a popsicle

• boiling water