Across
- 3. gases/the most stable element group on the periodic table is the _______
- 5. compound/compounds formed with no metals
- 8. naturally found in pairs
- 10. reaction in which molecules break down
- 13. that change colour depending on if it is exposed to a acid or base
- 16. compound/compounds that have both a metal atom and a nonmetal atom
- 17. acid
- 18. shell/the outermost shell in an atom
- 19. ability for a material to be stretched
Down
- 1. reaction that occurs when two different atoms join together to make a --molecule
- 2. + O2 → H2O + CO2
- 4. ability for a material to be flattened or rolled
- 6. bond/the bond formed when two atoms share electrons
- 7. metals/the first group on the periodic table is the __________
- 9. acid/HNO3
- 11. order for neutralization to occur, a salt and ____ must be made in a reaction
- 12. lowest temperature that a liquid will ignite
- 13. atom that has either gained or lost an electron
- 14. displacement/the reaction when two different molecules switch atoms
- 15. ability to be dissolved into a liquid