States of Matter
Has a definite shape and is rigid.
What is a solid?
phase change from solid to liquid
What is melting?
particle motion when energy is added.
What is particles move faster?
particle behaviors when a solid melts
What is they move more freely and spread apart?
phase change that occurs when puddles dry up
What is evaporation?
takes the shape of its container and flows.
What is a liquid?
phase change from liquid to gas AND phase change from gas to liquid.
What is evaporation and condensation?
type of energy is related to the motion of particles
particle behavior during evaporation.
What is they spread apart and move faster?
phase change that forms dew on grass in the morning
has no definite shape and fills the container.
What is a gas?
a pull between two molecules that is the same for each substance
What is molecular attraction?
molecules when their kinetic energy decreases
What is they move slower?
particle energy during condensation.
a cold soda can develop water droplets on the outside because...
What is water vapor in the air condenses into liquid on the cold surface?
molecules move the fastest.
What is a gas?
evaporation occurs faster on hot days because...
What is particles have more kinetic energy?
This phase change happens when a solid gains energy and turns into a liquid.
What is melting?
particle motion and spacing when a gas condenses into a liquid.
What is particles slow down and move closer together ?
wet clothes dry faster on a warm, sunny day than a cold day because...
What is Higher temperatures increase particle motion, speeding up evaporation.
the particle arrangement in a solid, liquid, and gas.
What are moves in place, moves around each other, and moves away from each other?
When a substance is freezing, energy is being __________ from the substance.
What is removed (or released)?
This phase change occurs when a gas loses energy and becomes a liquid.
What is condensation?
A student says, “Particles stop moving when a substance freezes.” This statement is incorrect because particles actually do this.
What is continue to vibrate in place?
salt is added to ice to make it melt faster (like in making ice cream) because...
What is salt lowers the freezing point, causing ice to melt while absorbing thermal energy?