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Semester Exam Vocab
Term | Definition |
---|---|
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 |