Understanding Solids and Liquids

Understanding Solids and Liquids

Assessment

Interactive Video

Physics, Chemistry, Science

5th - 8th Grade

Practice Problem

Hard

Created by

Olivia Brooks

FREE Resource

The video tutorial explains the behavior of molecules in solids and liquids. Solids are composed of molecules in a latticework pattern, vibrating in place, which maintains their shape. When heated, these molecules become excited, breaking the lattice and causing the solid to melt into a liquid. In liquids, molecules move chaotically, losing their shape and conforming to their container. Cooling reverses this process, slowing molecules and allowing them to reform into a solid structure.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What keeps a solid from falling apart?

The force of gravity

The latticework pattern of molecules

The temperature of the environment

The size of the molecules

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the scientific term for the 'little lumps' in solids?

Particles

Molecules

Atoms

Cells

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to a solid when it is exposed to enough heat?

It melts into a liquid

It becomes a gas

It becomes colder

It remains unchanged

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do liquids behave when left alone?

They spread out due to gravity

They solidify

They evaporate immediately

They maintain their shape

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What causes the molecules in a solid to start moving more freely?

Decrease in pressure

Decrease in temperature

Increase in temperature

Increase in pressure

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the result of molecules slipping out of their latticework?

The solid turns into a gas

The solid becomes more rigid

The solid becomes colder

The solid melts into a liquid

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does melting signify in terms of molecular behavior?

Molecules are losing their orderly pattern

Molecules are forming a new pattern

Molecules are becoming more orderly

Molecules are slowing down

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