Changes of State Answers

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Melting butter is a physical change. Which best describes what is happening?

A
The butter changes into a different substance.
B
The butter contains a new arrangement of atoms.
C
The butter cannot turn into a solid again.
D
The butter no longer contains the same number of atoms.
21

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32

What happens to the atoms in a scoop of ice cream as it melts?

A
They decrease in temperature.
B
They lose energy.
C
They vibrate faster.
D
They are held tightly in a fixed position.
34

Describe the conditions necessary for sublimation to occur.

Answer:

Sublimation occurs because the atoms in a solid must gain enough energy to form a gas without passing through the liquid state. Low air pressure and large amounts of energy, often in the form of heat, allow the atoms to move fast enough to overcome the attractive forces between them.

35

What did you include in your response? Check all that apply.

A
Sublimation occurs because the atoms in a solid must gain enough energy to form a gas without passing through the liquid state.
B
Low air pressure and large amounts of energy allow the atoms to move fast enough to overcome the attractive forces between them.

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Changes of State Answers — FL-2003010-MJ…