Grade 6 - What is Matter? - Unit 2
Boiling
liquid to a gas
Freezing
liquid to a solid
Condensation
gas to a liquid
Deposition
gas to a solid
Physical Change
A change that alters the form/appearance of a substance but does not change it into something new
Physical Property
A characteristic that can be observed without changing it into a new substance
Chemical Property
A characteristic that describes its ability to change into different substances
Compound
A substance made up of two or more elements in a set ratio
Matter
Anything that has mass and volume
Solid
State of matter with a definite shape and volume
Gas
State of matter with an indefinite shape and indefinite volume
Liquid
State of matter with an indefinite shape but definite volume
Element
Substance that cannot be broken down into any other substance
Atom
The basic particle from which all elements are made
Chemistry
The study of matter and how it changes
Molecule
Two or more atoms held together by chemical bonds
Mixture
Two or more substances together in the same place but not chemically combined
Pure Substance
When something is only made up of 1 element or 1 molecule. Examples: Gold, Water, Steel, Sugar, Salt.
Chemical Change
When two or more substances combine or break apart to form new substances
Sublimation
solid to a gas
Melting
solid to a liquid
Chemical Bond
the force of attraction that holds two atoms together
