Matter – anything that has mass and occupies
space, including all solids, liquids, and gases.
Property – a characteristic used to descried matter.
Mixture – matter that has two or more kinds of
particles and thus may have different properties in
different samples.
Pure substance – a substance that has the same
properties in any sample you choose. There are two
kinds of pure substances: elements and compounds.
Mechanical mixture - a mixture in any set of
moving parts.
Suspension Solution
Element – a pure substance that can’t be broken
down into any other pure substance.
Compound – a pure substance that is made up of
two or more elements that are chemically combined.
Physical change
Chemical change - a change in matter in which one
or more new substances are produced.
Chemical reaction –a change in matter in which
one or more new substances are produced.
Reactant – any substance that you start with in a
chemical reaction.
Product
Word equation
Corrosion – the eating always of metal as a result
of a chemical reaction.
Combustion – a chemical reaction in which oxygen
is one of the reactants and in which heat is
produced.
Scientific law
Law of conservation of mass