Chemistry

4. The transfer of energy by the movement of fluids with different temperatures.
5. The amount of energy transferred as heat that will raise the temperature of 1 kg of a substance by 1 K.
7. The change of a substance from a gas to a liquid.
8. A reaction in which energy is transferred to the reactants from the surroundings usually as heat.
11. The change of a substance from a solid to a gas.
13. The ability to change or move matter.
15. The energy stored within atoms and molecules that can be released when a substance reacts.
16. A change from one state (solid, liquid, or gas) to another without a change in chemical composition.
18. The change of a substance from a liquid to a solid.
19. A reaction that transfers energy from the reactants to the surroundings usually as heat.

1. The transfer of energy by electromagnetic waves.
2. The transfer of energy as heat between particles as they collide within a substance or between two objects in contact.
3. The temperature at which a liquid becomes a gas below the surface.
6. The stored energy resulting from the relative positions of objects in a system.
7. The measurement of heat.
9. The temperature at which a solid becomes a liquid.
10. The energy of a moving object due to its motion.
12. A measure of the average kinetic energy of all particles within an object.
14. The energy that is generated and measured by heat.
17. The transfer of energy from the particles of one object to those of another object due to a temperature difference.