Chem 2 test

Polyatomic Ion Charge = -1

• acetate - C₂H₃O₂^-
• bicarbonate (or hydrogen carbonate) - HCO₃^-
• bisulfate (or hydrogen sulfate) - HSO₄^-
• chlorate - ClO₃^-
• chlorite - ClO₂^-
• cyanate - OCN^-
• cyanide - CN^-
• dihydrogen phosphate - H₂PO₄^-
• hydroxide - OH^-
• nitrate - NO₃^-
• nitrite - NO₂^-
• perchlorate - ClO₄^-
• permanganate - MnO₄^-
• thiocyanate - SCN^-

Polyatomic Ion Charge = -2

• carbonate - CO₃^2-
• chromate - CrO₄^2-
• dichromate - Cr₂O₇^2-
• hydrogen phosphate - HPO₄^2-
• peroxide - O₂^2-
• sulfate - SO₄^2-
• sulfite - SO₃^2-
• thiosulfate - S₂O₃^2-

Polyatomic Ion Charge = -3

• borate - BO₃^3-
• phosphate - PO₄^3-

• Hcl, Hbr, Hi
• HNO3, H2SO4, HClO3, HClO4

It has an H infront of it i.e. HCl

the first two rows of the peirodic table, not including, "H" or the first three on the second row.

• Take all those and put an "OH on them
• Potassium hydroxide (KOH)
• Barium hydroxide (Ba(OH)2)
• Caesium hydroxide (CsOH)
• Sodium hydroxide (NaOH)
• Strontium hydroxide (Sr(OH)2)
• Calcium hydroxide (Ca(OH)2)
• Magnesium hydroxide (Mg(OH)2)
• Lithium hydroxide (LiOH)
• Rubidium hydroxide (RbOH)

1. energy can neither be created nor destroyed (the total amount of energy that exists is a constant) DeltaE=q+w

2. Entropy (disorder) of the universe increases during spontaneous reaction. Delta S >or = q/t

3. The entropy of any perfect crystal is zero (0) at the temperature of absolutue zero (0K or -273.15 C) aA+bB --> <-- cC+dD