Open SciEd: Chemical Reactions & Matter (Lessons 1 to 4)

Front

What is matter?

Back

Anything with mass and volume.

Front

What is a closed system?

Back

A system that does not allow transfer of matter in or out, but allows transfer of energy.

Front

What does mass measure?

Back

The amount of matter in a substance.

Front

What happens to less dense gases and liquids when surrounded by denser gases or liquids?

Back

They float upward.

Front

What is the melting point?

Back

The temperature at which a substance changes state from solid to liquid.

Front

What is an open system?

Back

A system that allows the transfer of both matter and energy.

Front

What is volume?

Back

The amount of space a substance occupies.

Front

What is density?

Back

The mass of a substance divided by its volume.

Front

What is the boiling point?

Back

The temperature at which a substance changes state from liquid to gas.

Front

What is a chemical reaction?

Back

A process that involves the rearrangement of the molecular or ionic structure of a substance.