Exam Review Changes of State of Matter (Science Bits)

2. What happened when we heated a washer and put it in the slot of a lid?

• At first it slid right through, but after heating it molecules expanded increasing the volume then it could not fit

• The washer slid right through the slot and made a clinging sound as it hit the bottom

• The molecules expanded after heating decreasing the volume

• The density increased making it heavier so it fell right through

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What happened when we continued to heat the metal washer and poured it into the key-shaped mold?

• evaporation

• vaporization

• solidification

• sublimation

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

In the experiment with the heated metal washer, which statement is true?

• Both the mass and volume of the washer changed

• mass did not change, volume changed

• volume did not change, mass changed

• neither mass nor volume changed

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NGSS.MS-PS1-5

What happened when we put a tube in a container of water and heated it and then cooled it?

• The bottle exploded from the increase in pressure as the molecules heated, the the bottle condensed when the molecules contracted decreasing pressure.

• The bottle expanded when heated and contract when cooled, causing the volume to change.

• The water boiled inside the container and evaporated into a gas which expanded and pushed outward on the bottle, when cooled the water vapor condensed back into a liquid exerting less pressure on the bottle.

• The molecules in the liquid moved away from each other during heating and took up more space in the tube, but when cooled, the molecules contracted, and the volume of the liquid in the tube decreased.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

Considering the balloon experiment (heating the balloon over a container of boiling water/putting a balloon in the

freezer/removing the balloon from the freezer). Which statement would be true?

• the mass and volume of the balloon both changed

• the mass remained unchanged, but the volume changed

• the volume remained unchanged, but the mass changed

• neither the mass nor volume changed

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NGSS.MS-PS1-4

NGSS.MS-PS1-2

When heating a substance the volume

• increases

• decreases

• stays he same

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NGSS.MS-PS1-4

When heating a substance the mass

• increases

• decreases

• stays the same

When cooling. substance the volume

• increases

• decreases

• stays the same

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NGSS.MS-PS1-4

When cooling a substance the mass

• increases

• decreases

• stays the same

When we apply heat to a substance molecules

• expand

• contract

• stay the same

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NGSS.MS-PS1-4