1. The ,1st 2nd ,3rd laws
1st law: An object that rest in motion stays at rest until force is applied.
2nd law: the rate change of momentum is proportional to the imposed force and goes in the direction of the force
3rd law: every action has to have an equal and opposite reaction.

2. Sound wave
Is a wave that travels through matter and off of matter; vibration is a back and forth movement of an object.

3. Vacuum mechanical wave
Can't go through a vacuum the only wave that can go through vacuum is electrical wave like the sun.

4. Energy
The ability to make change.
Example : toasting bread

5. Thermal energy
Heating up an object: increasing particles movement.

6. Nuclear energy
When the split and come together.

7. Potential energy
Is stored energy.

8. Kinetic energy
of an object is the energy which it possesses due to its motion.

9. Medium Any object that passes through air and makes waves
Example like a flag blowing through the air.

10. Doppler effect
Is the closer the wave is the louder it gets. And the farther the wave goes the quieter it gets.

11. Melting Point
a solid is the temperature when it changes states from solid to liqid.

12. Freezing Point
which the freezing point of a liquid is depressed when another compound is added, meaning that a solution has a lower freezing point than a pure solvent.

13. Evaporation
Is a liquid to a gas.

14. Condensation
Is a gas to a liquid.

15. sublimation
Is a solid to gas example is (dry ice)

16. deposition
Is a gas to a solid

17. Periodic table
is a display of the 118 known chemical elements organized by selected properties of their atomic structure.

18. Solids, gas, liquid,
These are the types of elements that are in the periodic talbe.