1. The smallest possible unit of matter.

The space occupied by a solid, liquid, or gas

1. A scientific measurement of volume, usually for liquids. 

1. A scientific tool used to measure out liquids accurately.

1. The idea that all matter consists of many particles that are 100,000 times smaller than the width of a human hair. 

1. A freezing liquid made from nitrogen gas. 

1. A container from which a vacuum pump removes air.

1. a tiny particle of matter. 

1. a measurement of how much matter something contains.