Key Area 1: Metals

Question 1

Metallic bonding is?

Answer 1

The electrostatic force of attraction between positively charged ions and delocalised electrons

Question 2

Metallic elements are conductors of electricity because??

Answer 2

They contain delocalised electrons

Question 3

The percentage composition of an element in any compound can be calculated from??

Answer 3

The formula of the compound

Question 4

Equations involving formulae can be written to show the reactions of metals with??

Answer 4

Oxygen, water and dilute acids

Question 5

Formulae equation of metals and oxygen?

Answer 5

Metal + oxygen ——> metal oxide

Question 6

Formulae equation of metal and water??

Answer 6

Metal + water ——> metal hydroxide + hydrogen

Question 7

Formulae equation of metal and dilute acid??

Answer 7

Metal + dilute acid ——> salt + hydrogen

Question 8

Metals can be arranged in order of reactivity by

Answer 8

Comparing the rates at which they react

Question 9

Metals can be used to produce … excess metal is added to the appropriate acid the mixture is .. and the … is evaporated to dryness (learn apparatus)

Answer 9

1. Soluble salts
2. Filtered
3. Filtrate

Question 10

Reduction is the

Answer 10

Gain of electrons by a reactant in any reaction (LHS)

Question 11

Oxidation is the

Answer 11

Loss of electrons by a reactant in any reaction

Question 12

In a redox reaction reduction and oxidation take place at the??

Answer 12

Take place at the same time

Question 13

Ion electron equations can be written for ??

Answer 13

Reduction and oxidation reactions

Question 14

Ion-electron equations can be

Answer 14

Combined to produce redox reactions

Question 15

During the extraction of metals .. are reduced forming …

Answer 15

1. Metal ions
2. Metal atoms

Question 16

The method used to extract metal form its ore depends on the position of the metal in the

Answer 16

Reactivity series

Question 17

What can be written to show the extraction of metals??

Answer 17

Equations

Question 18

Method for extracting Silver, Gold and Mercury is

Answer 18

Heat alone

Question 19

Method for extracting Copper, Lead, Tin, Iron and Zinc is

Answer 19

Heating with carbon or carbon monoxide

Question 20

Electrolysis is used for the extraction of

Answer 20

More reactive metals such as aluminium

Question 21

Electrolysis is the?

Answer 21

Decomposition of an ionic compound into its elements using electricity

Question 22

What must be used if the products of electrolysis are to be identified?

Answer 22

A d.c supply

Question 23

Positive ions …. Electrode

Answer 23

Gain electrons at the negative

Question 24

Negative ions … electrode

Answer 24

Lose electrons at the positive

Question 25

Electrically conducting solutions containing ions are known as??

Answer 25

Electrolytes

Question 26

A simple cell can be made by?

Answer 26

Placing two metals in an electrolyte

Question 27

Another type of cell can be made using??

Answer 27

Two half cells (metals in a solution of their own ions)

Question 28

An ion bridge (salt bridge) can be used??

Answer 28

To link the half-cells

Question 29

Ions can move across the bridge to complete an?

Answer 29

Electrical circuit

Question 30

Electricity can be produced in cells where?

Answer 30

At least one of the half-cells does not involve metal atoms/ions

Question 31

A graphite rod can be used?

Answer 31

As the electrode in such half-cells

Question 32

Different pairs of metals produce?

Answer 32

Different voltages

Question 33

Voltages can be used to

Answer 33

Arrange the elements into an electrochemical series

Question 34

The further apart elements are in the electrochemical series?

Answer 34

The greater the voltage produced when they are used to make and electrochemical cell

Question 35

Electrons flow in the

Answer 35

External circuit

Question 36

Electrons flow in the external circuit for the?

Answer 36

Species higher in the electrochemical series to the one lower in the e series

Question 37

For an electrochemical cell, including those involving metal and non metals, ion electron equations can be written for??

Answer 37

Oxidation reaction
Reduction reaction
Overall radon reaction

Question 38

When a metal is extracted from its ore, metal ions are changed to metal atoms.

Name this type of chemical reaction?

Answer 38

Reduction

Question 39

Anything with the word hydroxide is?

Answer 39

An alkali

Question 40

What type of electricity must be used when carrying out an electrolysis reaction?

Answer 40

Direct current