Energy

2. heat energy
5. smallest particle of an element. Composted of protons, neutrons and electrons.
9. the energy stored in the chemical bonds of a substance
10. a force that pushes on or squeezes a material
11. region where the material will return to its original shape when the stress is removed

1. the process by which one or more substances change to produce one or more different substances
3. the energy level that approaches the threshold (object cannot take any more without breaking)
4. the energy of stretched or compressed objects
6. energy cannot be created or destroyed
7. the process of changing one form of energy to another
8. a link between atoms in molecules of compounds