General Knowledge

Question 1

Hydrochloric acid

Answer 1

HCl

Example sentence: Hydrochloric acid is a strong acid commonly used in laboratory experiments.

Question 2

Nitric acid

Answer 2

HNO3

Example sentence: Nitric acid is a highly corrosive acid used in the production of fertilizers.

Question 3

Sulfuric acid

Answer 3

H2SO4

Example sentence: Sulfuric acid is used in car batteries and as a cleaning agent.

Question 4

Sodium hydroxide

Answer 4

NaOH

Example sentence: Sodium hydroxide is a strong base used in soap making.

Question 5

Potassium hydroxide

Answer 5

KOH

Example sentence: Potassium hydroxide is used in the production of biodiesel.

Question 6

Ammonia

Answer 6

NH3

Example sentence: Ammonia is a common household cleaner.

Question 7

Hydrogen

Answer 7

H+

Example sentence: Hydrogen ions are involved in acid-base reactions.

Question 8

Chloride

Answer 8

Cl-

Example sentence: Chloride ions are found in table salt.

Question 9

Lithium

Answer 9

Li+

Example sentence: Lithium ions are used in rechargeable batteries.

Question 10

Bromide

Answer 10

Br-

Example sentence: Bromide ions are sometimes used in photography.

Question 11

Sodium

Answer 11

Na+

Example sentence: Sodium ions are important for nerve function.

Question 12

Iodide

Answer 12

I-

Example sentence: Iodide ions are essential for thyroid function.

Question 13

Potassium

Answer 13

K+

Example sentence: Potassium ions are important for muscle function.

Question 14

Oxide

Answer 14

O2-

Example sentence: Oxide ions are involved in the formation of rust.

Question 15

Silver

Answer 15

Ag+

Example sentence: Silver ions are used in photography and jewelry making.

Question 16

Sulphide

Answer 16

S2-

Example sentence: Sulphide ions are found in minerals like pyrite.

Question 17

Magnesium

Answer 17

Mg2+

Example sentence: Magnesium ions are important for enzyme function.

Question 18

Calcium

Answer 18

Ca2+

Example sentence: Calcium ions are essential for bone health.

Question 19

Zinc

Answer 19

Zn2+

Example sentence: Zinc ions are important for immune function.

Question 20

Ammonium

Answer 20

NH4+

Example sentence: Ammonium ions are commonly found in fertilizers.

Question 21

Copper (II)

Answer 21

Cu2+

Example sentence: Copper (II) ions are used in electrical wiring.

Question 22

Hydroxide

Answer 22

OH-

Example sentence: Hydroxide ions are found in bases.

Question 23

Iron (II)

Answer 23

Fe2+

Example sentence: Iron (II) ions are involved in oxygen transport in the blood.

Question 24

Nitrate

Answer 24

NO3-

Example sentence: Nitrate ions are essential for plant growth.

Question 25

Iron (III)

Answer 25

Fe3+ ## Footnote Example sentence: Iron (III) ions are used in the production of steel.

Question 26

Carbonate

Answer 26

CO32- ## Footnote Example sentence: Carbonate ions are found in limestone and coral reefs.

Question 27

Aluminium

Answer 27

Al3+ ## Footnote Example sentence: Aluminium ions are used in various industrial applications.

Question 28

Sulphate

Answer 28

SO42- ## Footnote Example sentence: Sulphate ions are commonly found in minerals and soil.

Question 29

Magnesium chloride

Answer 29

MgCl2 ## Footnote Example sentence: Magnesium chloride is used as a supplement for magnesium.

Question 30

Sodium oxide

Answer 30

Na2O ## Footnote Example sentence: Sodium oxide is used in the production of glass.

Question 31

Iron (III) oxide

Answer 31

Fe2O3 ## Footnote Example sentence: Iron (III) oxide is commonly known as rust.

Question 32

Calcium hydroxide

Answer 32

Ca(OH)2 ## Footnote Example sentence: Calcium hydroxide is used in agriculture to adjust soil pH.

Question 33

Ammonium sulphate

Answer 33

(NH4)2SO4 ## Footnote Example sentence: Ammonium sulphate is used as a fertilizer in agriculture.

Question 34

Aluminium carbonate

Answer 34

Al2(CO3)3 ## Footnote Example sentence: Aluminium carbonate is used in the manufacturing of ceramics.

Question 35

Define ‘element’

Answer 35

A substance made up of only one type of atom, all with the same number of protons. ## Footnote Definition provided.

Question 36

Define ‘molecule’

Answer 36

Two or more atoms connected by chemical bonds. ## Footnote Definition provided.

Question 37

Define ‘compound’

Answer 37

A substance made up of two or more elements connected by chemical bonds. ## Footnote Definition provided.

Question 38

Are sodium, potassium, and ammonium salts soluble in water?

Answer 38

Yes

Question 39

Are nitrates soluble in water?

Answer 39

Yes

Question 40

Are chlorides soluble in water?

Answer 40

Mostly, yes

Question 41

Are sulfates soluble in water?

Answer 41

Mostly, yes

Question 42

Are silver and lead chlorides soluble in water?

Answer 42

No

Question 43

Are lead, barium, and calcium sulfates soluble in water?

Answer 43

No

Question 44

Are carbonates soluble in water?

Answer 44

Mostly, no

Question 45

Are hydroxides soluble in water?

Answer 45

Mostly, no

Question 46

Which carbonates are soluble?

Answer 46

Sodium, potassium, and ammonium

Question 47

Which hydroxides are soluble?

Answer 47

Sodium, potassium, and ammonium

Question 48

Which chloride ions are insoluble?

Answer 48

Silver and lead

Question 49

Which sulfates are insoluble?

Answer 49

Lead, barium, and calcium

Question 50

What are the conditions for RTP?

Answer 50

20 degrees C 101kPa

Question 51

What are the conditions for STP?

Answer 51

0 degrees C 101kPa

Question 52

What are standard conditions?

Answer 52

25 degrees C 101 kPa