Class Test 10 June Chemistry Pg 27-45

Question 1

H2O

Answer 1

Water

Question 2

CH4

Answer 2

Methane

Question 3

NH4

Answer 3

Ammonium

Question 4

PH3

Answer 4

Phosphine

Question 5

NO

Answer 5

nitric oxide

Question 6

N2O

Answer 6

nitrous oxide (“laughing gas”)

Question 7

OH

Answer 7

hydroxide

Question 8

CO3

Answer 8

carbonate

Question 9

NO3

Answer 9

Nitrate

Question 10

NH3

Answer 10

Ammonia

Question 11

SO4

Answer 11

sulphate

Question 12

PO4

Answer 12

phosphate

Question 13

NO2

Answer 13

nitrite

Question 14

SO3

Answer 14

sulphite

Question 15

ClO3

Answer 15

Chlorate

Question 16

CO3 valency

Answer 16

2

Question 17

SO4 valency

Answer 17

2

Question 18

NO3 Valency

Answer 18

1

Question 19

ClO3 Valency

Answer 19

1

Question 20

PO4 Valency

Answer 20

3

Question 21

OH Valency

Answer 21

1

Question 22

What is the law of conservation of matter

Answer 22

Matter cannot be created or destroyed.

Question 23

Definition of a compound

Answer 23

2 or more atoms of different elements are chemically bonded together in a fixed ratio