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20 Cards in this Set

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Newton's 1st Law
states that an object will remain at rest or in uniform motion unless an outside (unbalanced) force acts on the object.
Newton's 2nd Law
explains how force and mass and acceleration are related
Newton's 3rd Law
states that for every action there is an equal and opposite reaction.
Inertia
tendency to resist a change in motion
Motion
a change in position in a certain amount of time
speed
the rate at which an object moves
momentum
how difficult it is to stop an object in motion
one object's loss is another object's gain
pressure
force acting over a surface area
terminal velocity
when an object can no longer accelerate
atom
smallest part of matter
element
made up of one type of atom
group
columns, share properties-18 groups
period
row
protons
positive
neutrons
neutral
electrons
negative
metal
solid at room temp, shiny, good conductors
non-metals
usually not shiny, gas at room temp, do not conduct
metalloids
B, Si, Ge, As, Sb, Te: both metal and nonmetal
work
force acting through a distance