Across
- 4. the same number of protons
- 7. two or more elements chemically combined and can't be separated
- 9. type of bond that one element gives electrons to another element
- 12. mass weight of the element
- 13. affects polar bonds
- 14. 20-25% of the 92 natural elements are
- 15. element with the correct number of protons but more neutrons
- 18. electron electron found in the outermost shell
- 20. positively charged ion
Down
- 1. Atomic number is subtracted from the atomic mass
- 2. can't be broken down any further
- 3. have a positive charge
- 5. type of bond that one element shares electrons with another element
- 6. negatively charged ion
- 8. a material resulting from the chemical reaction
- 10. the starting material in a chemical reaction
- 11. two or more elements physically combined and can be separated
- 16. the dissolving agent
- 17. substance dissolved in a solution
- 19. smallest unit of matter