Principles of Chemistry 1211

Compound

A substance formed when two or more different elements are bonded together.

Matter

Anything that has mass and occupies space.

Element

A substance composed of one atom that cannot be broken down chemically.

Mass

The measure of the qauntity of matter.

Heterogenous

A mixture whose components are not uniformly distributed and remain distinct. EX) Oil and Water

Homogenous

A mixture and or solution that has uniform properties EX) Vinegar

Atomic Number (Zero)

Proton

The Basic Structure of an Atom

Atoms are made up of subatomic particles. (Protons, Neutrons, Electrons)

Mass Number (A)

Protons plus Neutrons

Isotope

a version of a chemical element that has the same number of protons and electrons but a different number of neutrons compared to other isotopes of the same element

Metals

Left of the staircase and center of the periodic table usually solids and conduct heat and electricity Ex) Iron, Aluminum, Copper, Gold, Silver, Zinc, etc.

Non-Metals

Right of the staircase, poor hear conductors. Ex) Caron, Sulfur, Iodine, Phosphorus, etc.