Across
- 2. Number , Total number of proton and neutrons in an atom's nucleus
- 3. bond- Forms when atoms share one or more pairs of electrons
- 6. bond , An interaction that holds atoms or ions together
- 9. , An uncharged atomic particle
- 10. number , Number of protons in the nucleus of an atom
- 14. , Elements that are shiny,conducts heat and conduct electricity
- 16. particle with a positive or negative charge
- 18. A group of atoms held together by chemical bonds
- 19. bond , A force that brings oppositely charged ions together
Down
- 1. atomic mass , An atom is the weighted average of the masses of all naturally occurring isotopes of that element.
- 4. , Poor conductors of heat and electricity. Often are dull and brittle
- 5. , Positively charged atomic particles
- 7. Bonds , forms between metal atoms when their outermost energy levels overlap
- 8. , The smallest particle of an element that has the chemical properties of that element
- 11. Symbol , An abbreviation for the elements name.
- 12. , Elements that have some properties of metals and some properties of nonmetals
- 13. Electrons , Found in the outermost energy level of an atom
- 15. , A negatively-charged subatomic particles
- 17. Bond , A bond that forms when electrons are transferred from one atom to another