Across
- 2. Chemical symbol C
- 4. An atom that has gained an electron
- 6. Bonds between charged particles
- 7. Tell you how many protons and electrons an element will have
- 10. Atoms joined together are ...
- 11. Made of just one type of element
- 12. Atoms of the same element with different numbers of neutrons
- 13. The basic building block of life.
- 15. Made of different elements bonded together
- 16. Contain protons and neutrons
- 17. A columns of the periodic table
Down
- 1. Bonds that share electrons
- 2. An ion that has a positive charge
- 3. Particle found in the nucleus that carries a positive charge
- 5. A rows of the periodic table
- 6. An atom that has gained or lost an electron
- 7. The overall weight of an element
- 8. Is found in clouds around the nucleus
- 9. The maximum number of electrons in the second electron shell
- 14. Chemical symbol Hg