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Semester Exam Vocab

Mass Weight of an object
Volume Measurement of space around an object
Density The amount in a certain space
Atom Basic unit of a chemical element
Nucleus The brain of a cell
Group The number of valence electrons
Period Number of electron shells
Coefficient Amount of atoms
Subscript Amount of molecules
Physical change A change only to the outside
Chemical change A change in an object chemically
Hypothesis A prediction
Inference An educated guess
Observation Something you can see
Force An push or pull
Speed An objects rate of movement
Acceleration An objects change in speed
Velocity An objects speed and direction
Balanced force 2 forces that equal eachother out
Unbalanced force 2 objects acting on eachother that are not equal
Created by: K1212365