formula & writing equations

Question 1

Examples of Diatomic Molecules

Answer 1

H2, O2, N2, F2, Cl2, Br2, I2
Hydrogen, oxygen, nitrogen, fluorine, chlorine, bromine, iodine

Question 2

Examples of Polyatomic molecules

Answer 2

O3, P4, S8
Ozone, phosphorus, sulfur

Question 3

Compound

Answer 3

A substance which contains two or more elements, chemically combined in definite amount (fixed proportion)

Question 4

Covalent substances

Answer 4

Formed between non-metallic elements, by the sharing of electrons

Question 5

Water

Answer 5

H2O

Question 6

Ammonia

Answer 6

NH3

Question 7

Methane

Answer 7

CH4

Question 8

Glucose

Answer 8

C6H12O6

Question 9

Prefix

Answer 9

Mono, Di, Tri, Tetra, Penta, Hexa

Question 10

Ionic compounds

Answer 10

Formed between metal and non-metal elements to form oppositely charged ions, by the transferring of electrons

Question 11

Zinc

Answer 11

Zn 2+

Question 12

Silver

Answer 12

Ag+

Question 13

Hydroxide

Answer 13

OH-

Question 14

Nitrite/ nitrate(III)

Answer 14

NO2 -

Question 15

Nitrate/ nitrate (v)

Answer 15

NO3 -

Question 16

Hydrogencarbonate / bicarbonate

Answer 16

HCO3 -

Question 17

Hydrogensulfate

Answer 17

HSO4 -

Question 18

Manganate (vii)

Answer 18

MnO4 -

Question 19

Carbonate

Answer 19

CO3 2-

Question 20

Sulfite/sulfate (V)

Answer 20

SO3 2-

Question 21

Sulfate/ sulfate (VI)

Answer 21

SO4 2-

Question 22

Chromate (vi)

Answer 22

CrO4 2-

Question 23

Dichromate (vi)

Answer 23

Cr2O7 2-

Question 24

Phosphate (V)

Answer 24

PO4 3-