Question 1

Which is not the meaning of reduction (reduced)?

Accepted Answer

loss of electrons

Answer

gain of electrons

Answer

loss of oxygen

Question 2

Which is not the meaning of oxidation (oxidised)?

Accepted Answer

gain of electrons

Answer

loss of electrons

Answer

gain of oxygen

Question 3

What is the sentence to remember the reactivity series?

Accepted Answer

Please Send Lions Cats Monkeys And Cool Zebras Into The Lovely Hot Countries Signed General Penguin

Answer

Please Send Lions Monkeys Cats And Cool Zebras Into The Lovely Hot Countries Signed General Penguin

Question 4

What is the correct order for the reactivity series?

Accepted Answer

Potassium Sodium Lithium Calcium Magnesium Aluminium Carbon Zinc Iron Tin Lead Hydrogen Copper Silver Gold Platinum

Answer

Potassium Sodium Lithium Calcium Magnesium Aluminium Carbon Zinc Tin Iron Lead Hydrogen Copper Silver Gold Platinum

Question 5

what is another way of remembering the reactivity series?

Accepted Answer

Group 1 metals are most reactive, then Group 2, then Group 3 and then Transition metals

Answer

Group 1 metals are most reactive, then Group 3, then Group 2 and then Transition metals

Question 6

How do we compare the reactivity of metals?

Accepted Answer

How easily they lose electrons to form ions, how easily they react with oxygen, water and acids. The more vigorous the reaction, the more reactive the metal.

Answer

How easily they lose electrons to form ions, how easily they react with oxygen, water and acids. The less vigorous the reaction, the more reactive the metal.

Question 7

metal carbonate (alkali) + acid

Accepted Answer

salt + water + carbon dioxide

Answer

salt + hydrogen ( MASH)

Answer

salt + water

Question 8

metal + water

Accepted Answer

metal hydroxide + hydrogen

Answer

salt + hydrogen

Answer

salt + water

Answer

salt + water + carbon dioxide

Question 9

metal + acid

Accepted Answer

salt + hydrogen ( MASH)

Answer

salt + water

Answer

salt + water + carbon dioxide

Question 10

metal oxide (alkali) + acid

Accepted Answer

salt + water

Answer

salt + water + carbon dioxide

Answer

salt + hydrogen ( MASH)

Question 11

metal hydroxide (alkali) + acid

Accepted Answer

salt + water

Answer

salt + hydrogen ( MASH)

Answer

salt + water + carbon dioxide

Question 12

what is a displacement reaction?

Accepted Answer

A more reactive metal will displace a less reactive metal from its compound and the less reactive metal will appear on its own after the reaction

Answer

A less reactive metal will displace a more reactive metal from its compound and the less reactive metal will appear on its own after the reaction

Question 13

What is an ore?

Accepted Answer

A rock which contains enough of a metal to make it economically worth extracting.

Answer

A solution which contains enough of a metal to make it economically worth extracting.

Question 14

How do you extract metals that are more reactive than carbon?

Accepted Answer

electrolysis - electricity will split the ionic compound back into elements.

Answer

heat them with carbon, carbon will displace the metal.

Question 15

How do you extract metals that are less reactive than carbon?

Accepted Answer

heat them with carbon, carbon will displace the metal.

Answer

electrolysis - electricity will split the ionic compound back into elements.

Question 16

Which metals are found native in the Earth's crust because they are highly unreactive?

Accepted Answer

Silver, Gold, Platinum

Answer

Potassium, Sodium, Gold

Question 17

How else can a relatively less reactive metal be extracted from its ore?

Accepted Answer

Heating with hydrogen

Answer

Electrolysis

Question 18

How to name a salt?

Accepted Answer

First word = Metal Second word = acid ending

Answer

First word = acid ending  Second word = metal

Question 19

Acid ending for sulfuric acid

Accepted Answer

sulfate

Answer

chloride

Answer

nitrate

Question 20

Acid ending for hydrochloric acid

Accepted Answer

chloride

Answer

sulfate

Answer

nitrate

Question 21

Acid ending for nitric acid

Accepted Answer

nitrate

Answer

sulfate

Answer

chloride

Question 22

What is the charge on a sulfate ion? SO4

Accepted Answer

2-

Answer

1-

Question 23

What is the charge on a nitrate ion? NO3

Accepted Answer

1-

Answer

2-

Question 24

Acid + alkali is a

Accepted Answer

Neutralisation reaction

Answer

Decomposition reaction

Question 25

How to make copper salt?

Accepted Answer

Add excess insoluble copper oxide to sulfuric acid, stir, warm gently, filter off excess, evaporate half the water using water bath. Leave for remaining water to evaporate off slowly to form larger crystals of the salt.

Answer

Add insoluble copper oxide to sulfuric acid, stir, warm gently, filter off excess, evaporate half the water using water bath. Leave for remaining water to evaporate off slowly to form larger crystals of the salt.

Question 26

What is limestone mainly made up of which leaves statues/building vulnerable to damage by acid rain?

Accepted Answer

Calcium carbonate

Answer

Calcium oxide

Question 27

What is an alkali?

Accepted Answer

A soluble base

Answer

A soluble acid

Question 28

What are examples of weak acids?

Accepted Answer

ethnoic acid and citric acid

Answer

sulfuric acid and nitric acid

Question 29

What is a base?

Accepted Answer

Neutralises acids

Answer

Neutralises alkalis

Question 30

What does H2O split into?

Accepted Answer

H+ ions and OH- ions

Answer

H- ions and OH+ ions

Question 31

Which pH is neutral?

Accepted Answer

7

Answer

0-6

Answer

8-14

Question 32

Which pH is acidic?

Accepted Answer

0-6

Answer

8-14

Answer

7

Question 33

Which pH is alkaline?

Accepted Answer

8-14

Answer

0-6

Answer

7

Question 34

What ions do alkalis form in solution?

Accepted Answer

OH-

Answer

H+

Question 35

What ions do acids form in solution?

Accepted Answer

H+

Answer

OH-

Question 36

What are the colours in which universal indicator turns in an alkali?

Accepted Answer

Blue, purple

Answer

Red, yellow, orange

Answer

Green

Question 37

What are the colours in which universal indicator turns in an acid?

Accepted Answer

Red, yellow, orange

Answer

Green

Answer

Blue, purple

Question 38

Which is the most accurate way of measuring the pH of an acid/alkali?

Accepted Answer

pH probe

Answer

universal indicator

Answer

litmus paper

Question 39

What is the difference between strong and weak acids?

Accepted Answer

Weak acids partially ionise in solution (reversible reaction), strong acids completely ionise in solution.

Answer

Strong acids partially ionise in solution (reversible) , weak acids completely ionise in solution

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