AP Chemistry

Question 1

What is a Polyatomic ion?

Answer 1

A covalently bonded group of atoms that has a positive or negative charge and acts as a unit

Question 2

Ammonium (formula and charge)

Answer 2

NH₄^-

Charge: +1

Question 3

Acetate (formula and charge)

Answer 3

C₂H₃O₂^- (aka CH₃COO)

Charge: -1

Question 4

Bicarbonate (formula and charge)

Answer 4

HCO₃^-1

Charge: -1

Question 5

Carbonate (formula and charge)

Answer 5

CO₃^-2

Charge: -2

Question 6

Hypochlorite (formula and charge)

Answer 6

ClO^-1

Charge: -1

Question 7

Chlorite (formula and charge)

Answer 7

ClO₂^-1

Charge: -1

Question 8

Chlorate (formula and charge)

Answer 8

ClO₃^-1

Charge: -1

Question 9

Perchlorate (formula and charge)

Answer 9

ClO₄^-1

Charge: -1

Question 10

Chromate (formula and charge)

Answer 10

CrO₄^-2

Charge: -2

Question 11

Cyanide (formula and charge)

Answer 11

CN^-1

Charge: -1

Question 12

Dichromate (formula and charge)

Answer 12

Cr₂O₇^-2

Charge: -2

Question 13

Phosphate (formula and charge)

Answer 13

PO₄^-3

Charge:-3

Question 14

Hydrogen Phosphate (formula and charge)

Answer 14

H
PO₄^-2

Charge: -2

Question 15

DiHydrogen Phosphate (formula and charge)

Answer 15

H
₂PO₄^-1

Chagre: -1

Question 16

Hydroxide (formula and charge)

Answer 16

OH^-1

Charge: -1

Question 17

Nitrate (formula and charge)

Answer 17

NO₃^-1

Charge: -1

Question 18

Nitrite (formula and charge)

Answer 18

NO₂^-1

Charge: -1

Question 19

Oxalate (formula and charge)

Answer 19

C₂O₄^-2

Charge: -2

Question 20

Peroxide (formula and charge)

Answer 20

O₂^-2

Charge: -2

Question 21

Permanganate (formula and charge)

Answer 21

MnO₄^-1

Charge:-1

Question 22

Sulfate (formula and charge)

Answer 22

SO₄^-2

Charge: -2

Question 23

Sulfite (formula and charge)

Answer 23

SO₃^-2

Charge: -2

Question 24

Solubility Summary Rule #1

Answer 24

Coumpounds containing alkali metal cations and the ammonium ion are soluble

Question 25

Solubility Summary Rule #2

Answer 25

Compounds containing Nitrate are soluble

Question 26

Solubility Summary Rule #3

Answer 26

Chlorides, bromides, and iodides are soluble EXCEPT those containing Ag⁺, Pb²⁺, or Hg²⁺.

Question 27

Common Strong Acids:

Answer 27

HCl, HBr, HI, HNO₃, H₂SO₄, HClO₄, HClO₃

Question 28

Common Strong Bases

Answer 28

Group IA and Ca²⁺, Sr²⁺, and Ba²⁺ hydroxides

Question 29

Diatomic Elements Remembering tool

Answer 29

HOFBrINCl P(hosphoros)lease S(ulfur)ee

Question 30

What are all the Diatomic elements?

Answer 30

Hydrogen (H₂), Oxygen (O₂), Fluorine (F₂), Bromine (Br₂), Iodine (I₂), Nitrogen (N₂), Chlorine (Cl₂), Phosphorus (P₂), Sulfur (S₂)