Term Definition Example
Element Pure substance with one type of particle. Oxygen, carbon dioxide, nitrogen, aluminum.
Compound Pure substance with two or more elements joined together. H2O, sugar water, salt.
Mixture Two or more substances combined together. Salt water, orange juice, tap water, milk, chocolate chip cookie.
Homogeneous Mixture Mixtures that have only one set of properties. Paint, coffee, food coloring.
Heterogeneous Mixture Two or more Components that are visible. Chocolate chip cookie, milk.
Colloid Heterogeneous mixture in witch the particles don't separate. Milk, mayo
Solution A homogeneous mixture of two or more substances.
Suspension a heterogeneous mixture in witch the particle settles slowly.
Mechanical Mixture An obviously heterogeneous mixture.
Pure Substance A substance made up of one kind of matter that can combine chemically. Oxygen, gold, carbon dioxide, pure water.