ch. 2, pt. 1
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
卡片预览 (24 张)
anything that has mass and takes up space
matter
everything in the _______ is made of matter
universe
matter is made of tiny ______ which can be atoms, molecules, or electrically charged particles
particles
electrically charged particles
ions
what are the four main states of matter?
• solid • liquid • gas • plasma
solids have a _______ shape and a ______ volume
definite (2)
the particles are packed _____ together of solids
close
although the particles are locked into place, they _____ back and forth (solids)
vibrate
liquids have an ________ shape and a _____ volume
indefinite; definite
a liquid will take the shape of its ______. the particles are still packed ______ together but are far enough apart to _____ over one another
container; close; flow
gases have an ______ shape and an ______ volume
indefinite (2)
a gas will ______ to fill its container. The particles move _____ and are very ____ apart
expand; fast; far
____ percent of matter in the universe is made of _____
99.9; plasma
plasma has an electrical _____. most of the plasma in the universe is found within _____
charge; stars
matter can change from one state to another with a change _____ energy
heat
when heat increases, the particles move _____ and spread further apart. When heat decreases, the particles mover _______ and get closer together.
faster; slower
melting
solid; liquid
vaporization
liquid; gas
freezing
liquid; solid
deposition
gas, solid
sublimation
solid; gas
T/F: the particles in a solid are rigid and do not move
false
condensation
gas; liquid
T/F: decreasing heat energy can cause a phase change
true