stm 005

Acid

Substance that yields hydrogen ions (H+) when dissolved in water

Base

Substance that yields hydroxide ions (OH-) when dissolved in water

Colloid

Dispersion of particles of one substance throughout a dispersing medium made of another substance

Compound

Substance composed of atoms of two or more elements chemically united in fixed proportions

Elements

Substance that cannot be separated into simpler substances by chemical means

Heterogeneous Mixture

Individual components of a mixture remain physically separated and can be seen as separate components

Homogeneous Mixture

Composition of a mixture, after sufficient stirring, is the same throughout the solution

Inorganic Compound

Compounds other than organic compounds

Matter

Anything that occupies space and has mass

Metal

Element that is a good conductor of heat and electricity and tends to form positive ions in ionic compounds

Metalloid

Element with properties intermediate between those of metals and non-metals

Mixture

Combination of two or more substances in which the substances retain their identity

Non-metal

Element that is usually a poor conductor of heat and electricity

Organic Compound

Compounds that contain carbon, usually in combination with elements such as hydrogen, oxygen, nitrogen, and sulfur

Oxides

Substances that contain at least one oxygen atom and one other element in its chemical formula

Salts

Product of the reaction between an acid and a base (other than water); inorganic salt is any salt that doesn't contain carbon

Solution

Homogeneous mixture of two or more substances

Substance

Form of matter that has a definite or constant composition

Suspension

Heterogeneous mixture in which relatively large particles are scattered through a solid, liquid, or gas, larger than in a solution and colloid