Introduction to Chemistry: Matter, Substances & Mixtures

Anything that has mass and takes up space (volume).

A substance with a fixed composition and distinct properties; can be elements or compounds.

Substances that cannot be broken down into simpler substances by chemical means; composed of only one kind of atom.

Combinations of two or more elements chemically combined in fixed proportions.

Combinations of two or more substances where each substance retains its chemical identity.

Describes how a substance changes into other substances through chemical reactions.

Expresses numbers as A x 10^n, making very large or small numbers easier to handle.

Digits in a measurement that are known precisely plus one estimated digit.

Method of converting units using conversion factors to ensure correct dimensions.

Atoms or molecules that have gained or lost electrons, resulting in a net electric charge.

Atoms of the same element with different numbers of neutrons.

A bond resulting from the sharing of electrons between atoms.

The reactant that is completely consumed in a chemical reaction, determining the maximum amount of product formed.

Homogeneous mixtures of two or more substances.

The state in which the rates of the forward and reverse reactions are equal, resulting in constant concentrations of reactants and products.