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10 terms

Science Ch 6 Checkup Ia

STUDY
PLAY
chemistry
the study of what substances are made of, and how one substance can be changed into another
matter
anything that takes up space and has weight
weight
a measure of the pull of gravity upon an object
mass
the amount of matter that makes up an object
density
the amount of matter (mass) in one unit of volume (space)
atom
the tiny particles that make up matter
nucleus
the tiny, extremely dense core of an atom
electrons
tiny particles in an atom that circle the nucleus at tremendous speed
neutrons
one of the two kinds of particles that make up the nucleus of an atom; has a neutral charge
protons
one of the two kinds of particles that make up the nucleus of an atom; has a positive charge