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A substance made of only one type of atom.
element
a type of mixture that is mixed evenly
homogeneous mixture
What type of properties can be measure WITHOUT changing the identity of the matter: physical or chemical
physical properties
type of matter in which the atoms are packed tightly together and vibrating back and forth quickly
solid
type of matter in which atoms are far apart and collide with each other
gas
What are the electrons on the outer electron shell of an atom called?
valence electrons
As you move down the rows of the periodic table, what gets added each row?
a new electron shell
What are the 3 things needed to describe a position?
distance, direction, reference point
Is this a complete and accurate position? The adorable dog is 10 feet to the left of the angry cat.
Yes, there is distance, direction, and reference point.
When are the distance and displacement of an object equal?
when motion is in a straight line
Speed measures how fast something is going, velocity measures that and what else?
the direction the object is traveling
Is speed a scalar or vector quantity?
scalar
What is a vector quantity?
measures magnitude (how much) and direction
What is the measurement of the change in velocity over time?
acceleration
True or false: An object accelerates when it speeds up, slows down, and changes direction.
True
What is a push or pull on an object and is measured in Newtons?
force
