Chemistry Chapter 1

Matter

Anything that has mass and occupies space

Solid

rigid and posses a definite shape

Liquid

Flows and takes the shape of the container

Gas

Takes both the shape and volume of the container

Element

pure substance that cannot be broken down into simpler substances by chemical changes

Molecules

Two or more atoms of that element are bound together

Atoms

Elements consist of a single type of atom

Compounds

Molecules consisting of atoms of different elements bound together

Pure substances

Constant Composition

Cannot be broken down into simpler substances chemically

Pure substances that are elements

Pure substances that are compounds

Can be broken down into simpler substances or into its elements by chemical changes

Mixture

Combination of substances

Heterogeneous mixture

Composition that varies from point to point

Homogeneous mixture

Known as a solution

Has uniform composition throughout

Law of Conservation of Matter

During a physical or chemical change, there is no detectable change
in the total quantity of matter present. Matter cannot be created or
destroyed.

Physical Change

Phase of a substance changes

Between solid, liquid, gaseous states

Chemical Change

Matter is converted from one type to another

beer brewing: water, yeast, grains, malt, hops, and sugar are
converted into beer (water, alcohol, carbonation, and flavoring)

Physical Properties

Characteristics of matter are not associated with a change in chemical composition

density, color, hardness, conductivity, viscosity, etc.

Chemical Properties

Ability to change from one type of matter into another type of matter

flammability, reactivity, acidity, etc.