Chemistry

Question 1

What is a chemical reaction?

Answer 1

One or more reactants converted into one or more products

Question 2

Differentiate between ionic and molecular compounds

Answer 2

Ionic = non-metal and metal
Molecular = non-metal and non-metal

Question 3

Acids

Answer 3

Sour, not slippery, ph<7, litmus turns red, conduct electricity, form h ions

Question 4

Bases

Answer 4

Bitter, slippery, litmus turns blue, conducts electricity, forms oh ions

Question 5

Ph scale

Answer 5

Ph <7 = acidic
Ph 7 = neutral
Ph > 7 = basic

Question 6

What is the law of conservation of mass

Answer 6

Total mass of reactants = total mass of products

Question 7

Roman numerals

Answer 7

1 = I
2 = II
3 = III
4 = IV
5 = V
6 = VI
7 = VII
8 = VIII
9 = IX
10 = X

Question 8

Common “ATE” Polyatomics

Answer 8

Nitrate - NO3-
Chlorate - CLO3-
Carbonate - CO3-2
Surface - SO4-2
Phosphate - PO4-3

Question 9

Common “ITE” Polyatomics

Answer 9

Nitrite - NO2-
Chlorite - CLO2-
Carbonite - CO2-2
Sulfite - SO3-2
Phosphite - PO3-3

Question 10

Uncommon Polyatomics

Answer 10

Ammonium - NH4+
Hydroxide - OH-
Bicarbonate - HCO3-
Permangante - MnO4-

Question 11

Diatomic elements

Answer 11

Hydrogen
Bromine
Iodine
Nitrogen
Chlorine
Oxygen
Fluorine

Question 12

Prefixes

Answer 12

Mono
Di
Tri
Tetra
Penta
Hexa
Hepta
Octa
Nona
Deca

Question 13

Synthesis

Answer 13

A + B -> AB

Question 14

Decomposition

Answer 14

AB -> A + B

Question 15

Combustion

Answer 15

HxCy + O2 -> CO2 + H2O

Question 16

Single displacement

Answer 16

A + BC -> B + AC

Question 17

Double displacement

Answer 17

AB + CD -> CB + AD