CHEM-111 Exam 1 Required Content

Group 1A

Alkali Metals

Group 2A

Alkaline Earth Metals

Group 7A

Halogens

Group 8A

Noble Gases

Giga (G)

10⁹

Mega (M)

10⁶

kilo (k)

10³

hecto (h)

10^2

deka (da)

10^1

deci (d)

10^-1

centi (c)

10^-2

milli (m)

10⁻³

Micro (u)

10^-6

Nano (n)

10^-9

pico (p)

10^-12

Matter

composed of atoms; anything that occupies space and has mass

Chemistry

The study of matter and the changes matter undergoes

Atom

smallest building block of matter

Element

A unique type of atom

Extensive Properties

Depends on the amount of substance

Intensive Property

Does not depend on the amount of substance

Energy

The Capacity to do Work

Potential Energy (PE)

the energy stored in an object because of its position or composition

Kinetic Energy (KE)

Energy of Motion

Accuracy

how close the result is to the "true" value

Precision

how reproducible the result is from trial to trial

Ion

charged atom

cation

positively charged atom

anion

negatively charged atom