Front

What does the chemical formula 'H2O' represent?

Back

It represents that each water molecule contains two hydrogen atoms and one oxygen atom.

Tags

NGSS.MS-PS1-1

Front

What are the three main states of matter?

Back

Solid, liquid, and gas.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What happens to the chemical structure of water when it changes state?

Back

Nothing happens to the chemical structure.

Tags

NGSS.MS-PS1-4

Front

What is plasma?

Back

Plasma is a state of matter that consists of ionized gas with free-moving ions and electrons.

Front

What do lightning and stars have in common?

Back

Both contain plasma.

Front

What is an example of a solid?

Back

Ice is an example of a solid.

Tags

NGSS.2-PS1-1

NGSS.2-PS1-2

Front

What is an example of a liquid?

Back

Water is an example of a liquid.

Front

What is an example of a gas?

Back

Oxygen is an example of a gas.

Front

What is the process called when a solid turns into a liquid?

Back

Melting.

Tags

NGSS.MS-PS1-4

Front

What is the process called when a liquid turns into a gas?

Back

Evaporation.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4