Changes in Matter

What is melting?

• when something changes from a liquid to a gas
• when something changes from a solid to a liquid
• when something changes from a liquid to a solid
• When something changes from a solid to a gel

What is freezing?

• when something changes from solid to liquid
• when something changes from liquid to solid
• when something changes from gas to liquid
• when something changes from a solid to a gel

How are melting and evaporation alike?

• both must start with a solid
• both happen when heat is added
• both happen when heat is taken away
• Both happen when something freezes

To share a pie with friends how would you change its shape?

• cut it
• sand it
• freeze it
• Stare at it

To change fruit juice into an ice pop you would...

• sand it
• cut it 
• freeze it
• Drink it

After a rainstorm a group of students notices puddles on the sidewalk. Later that afternoon the students observed a change in the puddles. What caused the water in the puddle to disappear?

• shadows covered the sidewalk
• the Sun's heat evaporated the water
• the rainstorms continued all day

A glass of water was left outside on the coldest day of the year. The low temperature could make what change in the water? The water could...

• change color
• get a salty taste
• turn into ice
• Turn into a liquid

Sometimes a burning candle will have wax dripping down the side. This happens because the heat of the flame...

• turns the wax of the candle to a liquid
• causes water to collect on the candle
• uses some of the gases in the air

As the ice cube melts, what will change?

• volume 
• mass
• shape

What causes water to freeze solid when placed in freezer? The freezer....

• adds heat to the water
• takes heat away from the water
• does not let light shine on the water