matter
anything that takes up space and has mass
properties of matter
a characteristic of matter; color, taste, odor, shape, texture, and volume
3 main states or phases of matter:
solid, liquid, gas
solid
tightly packed molecules; has a definite shape, and volume
liquid
loosely packed molecules; no definite shape, but definite volume
gas
very loosely packed molecules; no definite shape or volume
condensation
when air is cooled and turned into a liquid
evaporation
when a liquid turns into a gas
temperature
changes a solid into a liquid. think of the sun melting an ice cube (solid) to water (liquid)
atom
the smallest building block of matter
element
a(n) _________ is made up of only one kind of atom
compound
a substance made of two or more elements chemically combined
molecule
smallest particle made of two or more elements chemically combined
mixture
mixing two or more things together where each substance keeps its properties, and can be easily separated EX: Chex Mix
solution
a mixture in which the composition is the same throughout and dissolves with 2 parts: a solvent, which is the main substance, and a solute, which is the substance that dissolves in the solute; cannot be easily separated
suspension
a mixture in which one of the parts is a liquid, and some particles don't dissolve
mass
amount of matter something has
gram
a small unit used to measure mass; light-weight objects such as feathers, coins, and paper clips are mezsured in grams
kilogram
a thousand grams; heavier things are measured in kilograms, such as people, large animals, boulders, cars, etc.