Chemistry Review

5. the only positive polyatomic ion
6. type of bonding where electrons are shared
7. type of ion that is made up of more than one atom
8. bond that forms between a metal and a non-metal
11. mass divided by volume
14. the reaction between an acid and a base that makes water and a salt.
15. dissolved in water
17. reaction where something combines with oxygen to make carbon dioxide and water
19. diatomic element that makes up 79% of the air that you breath
20. solid formed by a double replacement reaction
21. unit for measuring the concentration of a solution

1. a reaction where one substance breaks apart into two or more substances
2. type of covalent bond where electrons are shared unequally.
3. the type of foil that Rutherford used in his experiment that discovered the nucleus of atoms
4. an atom or group of atoms with a negative charge
9. type of ion that has a positive charge
10. unit for measuring the pressure of a gas
12. region in space where electrons are most likely to be
13. solution which is "full" (no more solute will dissolve.
16. the branch of chemistry that focuses on calculating the amount of stuff in a reaction
18. unit that measures the number of particles