Solids Liquids & Gases

Gas

a form of matter (particles) that does not have a definite volume or shape

liquid

A state of matter (particles) that has no definite shape but has a definite volume.

solid

A form of matter (particle arrangement) that has a definite shape and volume

compress

to press together; to reduce in size or volume

collide

to crash into

expand

To increase in size or amount

vibrate

to move rapidly back and forth in one spot

sublimation

A change directly from the solid to the gaseous state without becoming liquid

evaporation

The transformation of liquid to vapour (gas)

melting

The change in state from a solid to a liquid

freezing

The change of state from a liquid to a solid

condensation

The change of state from a gas to a liquid

boiling point

The temperature at which a liquid changes to a gas

model

A pattern, plan, or description designed to show the structure or workings of an object, system, or concept

dependant variable (DV)

the research variable that is influenced by the independent variable - what you measure

independant variable (IV)

the variable the researcher manipulates in a controlled experiment - What you change

controlled variable

Factor in an experiment that a scientist purposely keeps the same

diffusion

Movement of molecules from an area of higher concentration to an area of lower concentration via random molecular movement over time.

particle theory

A theory that all substances are made of particles. Used to explain the different properties and observations of solids, liquids and gases

anomoly

something different from the norm - a result that does not fit a pattern or trend