Matter Unit Quizlet

STUDY
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matter
anything that has mass and takes up space
melting point
solid turns to a liquid
freezing point
liquid turns to a solid
boiling point
liquid turns to a gas
condensation
gas turns to a liquid
mass
the amount of matter in an object
balance scale
used to measure mass
weight
the force of gravity between Earth and an object
volume
the amount of space an object takes up
density
how tightly packed particles are in an object
atoms
TINY particles that make up matter
protons
have a positive charge, inside the nucleus
neutrons
do not have a charge, inside the nucleus
electrons
have a negative charge, outside the nucleus
physical change
a change in matter where nothing new is created; molecules stay the same
chemical change
a change in matter where something new is created; molecules change

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