electricity  - form of energy formed from charged patricles, chemical - a substance, chemistry - brance of science concerned with the substances and reactions with chemicals, lab - a room with scientific equiptment for tests etc, acid - a substance with particular chemical properties, particle - a minute portion of matter, electron - subatomic particle, cell  - small basic unit of life, atom - smallest particle of a chemical, bunsen burner  - gas burner, test tube  - thin glass used to hold small amounts of material for testing, DNA - a self-replicating material that is present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information., mass - property of body, matter - anything that takes up space and can be weighed, scientist - a person who is studying or has knowledge of science, biology - a study of living organisms, nucleus - positivly charged central core of an atom, biome - community of plants and animals that occur naturally in an area, chromosome - a threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes., measure  - certian size or degree of something,

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