Question 1

What does reactivity mean?

Accepted Answer

how vigorously a substance chemically reacts

Answer

how quickly a substance melts

Answer

how vigorously a substance changes state

Answer

how much substance is formed

Question 2

How can metals be ordered by their reactivity?

Accepted Answer

by comparing their reactions with water, acid, or oxygen

Answer

by observing how many non-metals it reacts with

Answer

by comparing their reactions with other metals

Answer

by comparing what happens when they are heated

Question 3

What name is given to a list of metals ordered by their reactivity?

Accepted Answer

reactivity series

Answer

the order of series

Answer

reactivity programme

Answer

the reaction list

Question 4

In terms of electrons, what makes some metals more reactive than others?

Accepted Answer

they lose their outer shell electron(s) more easily

Answer

they gain outer shell electron(s) more easily

Answer

they fill up their inner shell(s) more easily

Answer

they lose their inner shell electron(s) more easily

Question 5

Why are gold and silver found naturally as elements in the Earth’s crust?

Accepted Answer

they are very unreactive

Answer

they are very reactive

Answer

they are very rare

Answer

they are very expensive

Question 6

What term is used to describe a rock containing enough of a metal compound to be economically worth extracting?

Accepted Answer

an ore

Answer

a metal rock

Answer

a crystal

Answer

a precious rock

Question 7

How are metals less reactive than carbon extracted from their ores?

Accepted Answer

reduction with carbon

Answer

electrolysis

Answer

addition of carbon dioxide

Answer

oxidation with carbon

Question 8

In terms of oxygen, what is oxidation?

Accepted Answer

addition of oxygen

Answer

reaction with oxygen

Answer

electrolysis of oxygen

Answer

removal of oxygen

Question 9

In terms of oxygen, what is reduction?

Accepted Answer

removal of oxygen

Answer

addition of oxygen

Answer

electrolysis of oxygen

Answer

reaction with oxygen

Question 10

Why can metals like potassium and aluminium not be extracted by reduction with carbon?

Accepted Answer

they are more reactive than carbon

Answer

they are less reactive than carbon

Answer

they are less reactive than oxygen

Answer

they are more reactive than oxygen

Question 11

How are metals more reactive than carbon extracted from their ores?

Accepted Answer

electrolysis

Answer

reduction with carbon

Answer

oxidation with carbon

Answer

removal of oxygen

Question 12

What is a displacement reaction?

Accepted Answer

a more reactive substance takes the place of a less reactive substance in a compound

Answer

a less reactive substance takes the place of a more reactive substance in a mixture

Answer

a less reactive substance takes the place of a more reactive substance in a compound

Answer

a more reactive substance takes the place of a less reactive substance in a mixture

Question 13

What is an ionic equation?

Accepted Answer

equation which gives some substances as ions and has spectator ions removed

Answer

equation which shows all the spectator ions in a reaction

Answer

equation which has all the ions showing

Answer

equation which shows the addition or removal of oxygen

Question 14

What type of substance is given as ions in an ionic equation?

Accepted Answer

ionic compounds in solution (or liquid)

Answer

solid precipitates formed in the reaction

Answer

gas elements formed in a reaction

Answer

spectator ions

Question 15

What is a spectator ion?

Accepted Answer

ion that is unchanged in a reaction

Answer

catalysts not used up in a reaction

Answer

water that solutes are dissolved in but do not react

Answer

ion that gain charge in a reaction

Question 16

What is a half equation?

Accepted Answer

equation that shows whether a substance is losing or gaining electrons

Answer

equation which gives some substances as ions and has spectator ions removed

Answer

equation which shows what happens to spectator ions in a reaction

Answer

equation that shows whether a substance is losing or gaining protons

Question 17

In terms of electrons, what is oxidation?

Accepted Answer

loss of electrons

Answer

gain of electrons

Question 18

In terms of electrons, what is reduction?

Accepted Answer

gain of electrons

Answer

loss of electrons

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