Term Definition example
Element Pure substance with one type of particle oxygen, nitrogen, mercury
Compound Is a combination of two or more elements in a fixed proportions pure water, co2, ammonia, sugar, salt NaCI
Mixture Two or more substances combined together salt water, orange juice, tap water, milk, chocolate chip cookie
Homogeneous Mixture Mixtures that look like they only have one set of properties coffee, food coloring, salt water, tap water
Heterogeneous Mixture Has two or more components which are still visible raisin bread, salsa, salad dressing
Colloid Are heterogeneous mixtures where particles do not settle milk, mayo
Solution A homogeneous mixture of two or more substances salt water, apple juice
Suspension is a cloudy mixture in which tiny particles of one substance are held with of another substance salad dressing, orange juice
Mechanical Mixture an obviously heterogeneous mixture pizza, dirt
Pure Substances A substance made up of one kind of matter that can combine chemically oxygen, gold, carbon dioxide, distilled water

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