States of Matter

Dalixa is making chocolate-covered strawberries. She puts chocolate in the microwave and heats it up. This is an example of:

• melting

• freezing

• boiling

Aniela took a bottle of water and put in the freezer a couple of hours. It became ice. This is an example of:

• freezing

• boiling

• melting

Water turning into vapor because of a heat source is an example of:

• boiling

• condensation

• melting

Jose was cooking some rice and, after turning off the stove and putting the lid on the pot, he noticed droplets of water. This is an example of:

• condensation

• boiling

• freezing

When hydrogen gas turns into liquid hydrogen by applying large amounts of pressure and low temperatures it called:

• liquefaction

• condensation

• freezing

Changes in state occur because matter gains or releases energy.

• true

• false

The temperature at which a liquid becomes a gas is known as its melting point.

• false

• true

Answer explanation

It's called boiling, or evaporation.

______________ have volume and a definite shape; their particles are joined together and attract each other with a strong force, which is why they can only vibrate in place.

• Solids

• Liquids

• Gases

• Plasma

________________ can flow easily and lack a definite shape, which is why they take the shape of the container holding them. They have definite volume and their molecules move freely among themselves.

• Liquids

• Gases

• Solids

• Plasma

__________________ are characterized by lacking a definite volume or shape since they tend to adopt the shape of whichever container they occupy by filling its entire space.

• Gases

• Solids

• Liquids

• Plasma