Phase Change Amplify Unit - Review

Question 1

A group of atoms joined together in a particular way

Accepted Answer

molecule

Question 2

The molecules in a substance move around relative to each other.

Accepted Answer

freedom of movement

Question 3

How is the kinetic energy of molecules changing when the molecules move slower? The kinetic energy is

Accepted Answer

decreasing

Question 4

Transferring energy into a substance will decrease kinetic energy of the substance & freedom of movement will increase.

Accepted Answer

False

Question 5

Why did the lake on Titan take 7 years to evaporate?

Accepted Answer

It needed enough energy in order to break the molecular attraction .

Question 6

If enough energy is removed from a gas substance, the substance will become

Accepted Answer

a liquid and the molecules will move slower.

Question 7

Roberts bicycle is made of aluminum. When are the aluminum molecules in his bicycle moving?

Accepted Answer

ALWAYS!

Question 8

The energy that an object has because it is moving.

Accepted Answer

Kinetic Energy

Question 9

Which phase do the molecules have the least molecular attraction?

Accepted Answer

gas

Question 10

All substances need different amounts of energy in order to change phase.

Accepted Answer

True

Question 11

In a ___________ the molecules flow and take the shape of the container.

Accepted Answer

liquid

Question 12

In a __________ the molecules hold their shape and do not take the shape of the container.

Accepted Answer

solid

Question 13

The stronger the molecular attraction between the molecules the more energy (pick 2)

Accepted Answer

is needed to break the bonds, and change the phase of the substance.

Question 14

How many years did it take for the lake on TItan to freeze?

Accepted Answer

7

Question 15

A noticeably different form or state of the same substance

Accepted Answer

phase change

Question 16

What happened to the molecules in the jar?

Accepted Answer

The molecules were moving in place and then were moving around eachother.

Question 17

When ______ is transferred to or from a substance, it can change the molecules freedom of movement.

Accepted Answer

energy

Questions 17