Across
- 2. another word for pure
- 3. when protons and electrons cancel each other out to make a atom electrically neutral
- 6. number of protons
- 10. has a positive charge and is found inside the nucleus
- 11. impure substance, combinations of elements which aren't fixed
- 12. has a neutral charge located inside the nucleus
Down
- 1. smallest part of a compound
- 2. another word for mixture
- 4. pure substance that only contains one type of atom
- 5. smallest breakdown for an element
- 7. number of protons plus electrons
- 8. 2 or more elements chemically combined
- 9. negative charge located in a shell outside the nucleus