PSAE Chemistry Review

The study of matter and energy

PSAE Chemistry Review

Matter Anything with mass and volume

Energy Ability to cause change or do work

PSAE Chemistry Review

The atom Basic unit of matter Made of smaller particles Electrons orbit the nucleus due to electrostatic

charges

PSAE Chemistry Review

Three Subatomic Particles

Particle Charge Mass (amu)

Location

Proton (p+) +1 1.0 Nucleus

Neutron (n) 0 1.0 Nucleus

Electron (e-) -1 .00055 Electron Cloud around Nucleus

PSAE Chemistry Review

Element A pure sample of matter containing only one

type of atom

Compound More than one type of atom chemically bonded

together

Mixture More than one type of atom in the same space

but not bonded together

PSAE Chemistry Review

Physical change Change in state without changing the chemical

formula. Always involves absorbing or emitting energy

Solid Liquid Gas Plasma

Chemical Change A change in the chemical formula of a compound Changes the properties of the chemicals involved

2 KI (aq) + Pb(NO3)2 (aq) 2 KNO3 (aq) + PbI2 (s)

PSAE Chemistry ReviewPeriodic Table of the Elements

PSAE Chemistry Review

48Cd

Cadmium 112.411

PSAE Chemistry Review Metals to left

Metalloids in purple Nonmetals to right

Rare Earth Metals at bottom

•Group 1: Alkali metals

•Group 2: Alkaline Earth Metals

•Groups 3-12: Transition metals

•Group 17: Halogens

•Group 18: Nobel gases

PSAE Chemistry Review

Periodic trends

Property Down a group Right across a period

Atomic Radius Increases Decreases

Electronegativity Decreases Increases

Ionization Energy Decreases Increases