Metals

Question 1

Metals are put in order of their reactivity. What is the list called

Answer 1

the Electrochemical Series

Question 2

What is metallic bonding

Answer 2

This is where many positive ions bind together, surrounded by a sea of delocalised electrons.

Question 3

What is metallic bonding between (liquids, gases, metals etc..)

Answer 3

Between metals

Question 4

what does it mean is this sea of delocalised electrons are free to move

Answer 4

This means that metals conduct electricity

Question 5

How can metals conduct electricity

Answer 5

Delocalised electrons are free to move in metallic bonding

Question 6

Metal + Oxygen ———>

Answer 6

Metal Oxide

Question 7

Metal + Dilute Acids ———>

Answer 7

Salt + Hydrogen

Question 8

Metal + Water ———>

Answer 8

Metal Hydroxide + Hydrogen

Question 9

Only the most reactive metals react with water to create –

Answer 9

a metal hydroxide and hydrogen

Question 10

More, but not all of the metals on the electrochemical series can react with –

Answer 10

dilute acids

Question 11

Most metals on the series react with Oxygen to create –

Answer 11

a metal oxide

Question 12

Whatc an be used to extract metals that aren’t very reactive, such as gold

Answer 12

Heat

Question 13

How do those in the middle of the electrochemical series need to be extracted

Answer 13

by heating with carbon or carbon monoxide.

Question 14

What is Electrolysis

Answer 14

A process used to break down ionic substances by passing a direct electric current through the substance

Question 14

More reactive metals (those high up in the electrochemical series) need to be extracted from their ores using –

Answer 14

electrolysis

Question 15

What does Electrolysis cause

Answer 15

Causes chemical reactions at the electrodes and the decomposition of materials

Question 16

In what way does Electrical energy move within electrochemical cells

Answer 16

travels from metals high up in the electrochemical series to ones lower down in the electrochemical series

Question 17

How can a simple electrochemical cell be made

Answer 17

by placing two different metals in an electrolyte solution

Question 18

how can another type of electrochemical cells be made

Answer 18

By creating two half-cells through placing metals in solutions containing that metal’s ions. These two half calls can be connected using an ion bridge to complete the circuit.

Question 19

What is oxidation

Answer 19

When an atom loses electrons in a reaction, and the atom is oxidised.

Question 20

what is reduction

Answer 20

When an atom gains an electron in a reaction and the atom is reduced

Question 21

what are reducing agents

Answer 21

compounds used in reactions to reduce (give an electron) to another molecule, and in turn are oxidised themselves.

Question 22

When does a displacement reaction occur

Answer 22

When a compound containing a metal of the electrochemical series mixes with a compound containing another metal lower down on the electrochemical series. The compound with the more reactive metal atoms will displace those of the less reactive metal.