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1st semester vocab
Question | Answer |
---|---|
Triple Beam Balance | to measure the mass of small objects |
Graduated Cylinder | to measure liquids |
Hands Lens | to see small objects |
Flask | to measure liquids in mL |
Test Tube | to hold small amounts of chemicals |
Speed | Distance traveled by an object in a given amount |
Velocity | an objects speed and direction at a given instant |
Force | a push or pull |
Acceleration | change in an objects speed or direction (its velocity) over time |
Balanced Force | occurs when the total of all forces on an objects motion does not change. |
Law of Conservation of Mass | matter cannot be created or destroyed, it can only be changed |
Physical Change | occurs when the appearance of a substance is the same |
Chemical Change | rearranging atoms and molecules to create a new substance |
Chemical Formula | a short hand(faster)way of showing/writing atoms,molecules and equations |
Molecule | when 2 or more atoms chemically combine |
Reactants | substance that go through a chemical change |
Products | substance that result from a chemical changeNew |
Newtons 3rd Law | for every action there is an equal but opposite reaction |
Newtons 2nd Law | the acceleration of an object by a force is inversely proportional to the mass of the object and directly proportional to the mass of the object and directly proportional to the force |
Newtons 1st Law | an object at rest will stay at rest.Unless acted on by an unbalanced force.An object in motion will stay in motion at the same speed and in the same direction unless acted on by an unbalanced force |