Science - Unit 1 Vocabulary Quiz

atom

everything is made of atoms, and they are too small to see without special tools

boiling

when matter goes from liquid to a gas

boiling point

the temperature at which liquid evaporates (boils)

chemical change

a change where something new is made; the old material changes into a different material

chemical property

a fact about a material that tells how it can change into something new

condensation

gas to liquid

density

the number of atoms packed in a given space

deposition

gas to solid

evaporation

liquid to gas

fluid

liquid/gas

freezing

liquid to solid

freezing point

the temperature at which a liquid freezes

gas

substance with indefinite shape and indefinite volume

kinetic energy

energy of motion

kinetic theory of matter

all matter is made up of atoms that are in constant random motion

law of conservation of energy

energy cannot be created nor destroyed, only conserved

liquid

a substance with indefinite shape and definite volume

in liquids, intermolecular forces

hold these atoms/molecules loosely together but don't force them into rigid structure making liquids the ability to flow

mass

amount of matter in an object

melting

solid to liquid

melting point

the temperature at which a solid melts

molecule

smallest particle of a substance, a group of atoms bonded together

molecular motion

the movement of particles/molecules in a specific direction

particle

a very small piece of matter, such as an atom/molecule

phase change

when matter changes from one form to another

physical property

a fact about a material that can be seen or measured without changing it

plasma

a gas that has been energized resulting in a loss of electrons (charged)

solid

a substance with a definite shape and a definite volume

states of matter

one of the forms in which matter can exist

sublimation

solid to gas

vaporization

liquid to gas

volume

measurement of how much space an object takes up

matter

anything that has mass and takes up space