Ch 9 - What Matter is Made Of...
Emissions
Any substance that is released into the air
Particles
are a very small piece of matter
States of matter
can be solid, liquid or gas.
Solid
has a definite shape and volume; particles are packed together
Liquid
have a fixed mass, a fixed volume and an definite shape.
Gas
have a fixed mass, abut do not have a definite volume or shape.
matter
is anything that has mass and volume
mass
is the amount of matter in an object
Viscosity
is the flow rate of a liquid
Sublimation
occurs when a solid changes directly into a gas
Chemical change
process by which a substance becomes a new and different substance
The law of conservation of mass
states that matter cannot be created or destroyed but can change from one form to another.
Freezing point (temperature)
the temperature at which a substance changes from a liquid to a solid
Recycling
this involves taking an unwanted object and reusing the material it is made of
Condensation
when a gas turns to a liquid
Freezing
when a liquid turns into a solid state
Evaporation
when a liquid turns to a gas
Compression
when particles are forced close together to make them fit into a smaller space
Boiling point
The temperature at which a substance changes from a liquid to a gas
Melting point (temperature)
The temperature at which a substance melts
The Particle Theory
This theory states that all matter consists of many, very small particles
Melting
When a solid changes to a liquid
Diffusion
the spreading out of particles to fill the space they are in