Across
- 4. same # of protons, different # of neutrons
- 7. an atom that gained electrons
- 8. where nuclear energy is stored
- 9. two elements or compounds form one new compound
- 11. the energy of movement
Down
- 1. solid changes directly to gas
- 2. gas changes directly to solid
- 3. when heat is transfered by two things making physical contact
- 5. the weight of a proton
- 6. the law of conservation of mass says that all chemical equations must be:
- 10. distance traveled in a unit of time