Unit 1
The first element on the Periodic Table
What is Hydrogen?
a letter or pair of letters that represent the element in a formula
What is a chemical symbol?
A push or a pull
What is force?
boundary between a cold air mass and a warmer air mass
What is a cold front?
Atom with a positive charge
What is a proton?
When two or more molecules interact and molecules change.
What is a chemical reaction?
Object's tendency to remain unchanged in motion
What is inertia?
a region where a warm air mass is replacing a cold air mass
What is a warm front?
Atom with a negative charge
What is an electron?
Horizontal rows on the Periodic Table
What are periods?
An object in motion will stay in motion unless acted upon by an outside force
What is Newton's 1st Law of Motion?
where a warm air mass and a cold air mass meet
What is a stationary front?
Atom without a charge, (neutral)
What is a neutron?
Vertical rows on the periodic tabel
What are groups?
For every action, there is an equal and opposite reaction
What is Newton's 3rd Law of Motion?
when two cold air masses trap a warm air mass and force it upward
What is an occluded front?