Reactivity Of Metals

Question 1

What are metals called when they react with oxygen

Answer 1

Metal oxides

Question 2

What is an oxidation reaction

Answer 2

When oxygen is added to an element or compound

Question 3

What is a reduction reaction

Answer 3

When oxygen is removed from an element or compound

Question 4

Reactivity series

Answer 4

Potassium Please
Sodium Send
Lithium Lions
Calcium Cats
Magnesium Monkeys
Aluminium And
Carbon Cute
Zinc Zebras
Iron Into
Hydrogen Hot
Copper Countries
Silver Signed
Gold Gordon

Question 5

What is the reactivity series

Answer 5

The reactivity series shows metals in order of reactivity.

Question 6

Which metals reaction with water

Answer 6

Metals above hydrogen

Question 7

What is the equation for metals that react with water

Answer 7

Metal + water = metal hydroxide + hydrogen

Question 8

Which metals in the reactivity series do not react with acids

Answer 8

Ones below hydrogen

Question 9

What is the equation for metals reacting with acid

Answer 9

Metal + acid = metal salt + hydrogen

Question 10

Why do non metals appear in the reactivity series of metals

Answer 10

They usually contain carbon and hydrogen because these elements play different roles in our understanding of the reactions of metals and our ability to predict how metals can be extracted from their ores

Question 11

How are metals below carbon extracted from their ores

Answer 11

If a metal is less reactive than carbon, it can be extracted from its oxide by heating with carbon. The carbon displaces the metal from the compound, and removes the oxygen from the oxide. This leaves the metal.

Question 12

How are metals higher than carbon extracted from their ores

Answer 12

However if the metal is more reactive we use electrolysis,electrolysis involves using electricity to break down electrolytes to form elements

Question 13

What is a displacement reaction

Answer 13

when a more reactive element displaces, or pushes out, a less reactive element from a compound that contains the less reactive element. After a displacement reaction, the less reactive element is now pure and left uncombined.

Question 14

What is a metal ore

Answer 14

A rock that contains enough of a metal or metal compound to make it worth extracting

Question 15

How can you tell if it is a reduction reaction

Answer 15

If the ore is an oxide of the metal the extraction of the metal would be a reduction as oxygen is being removed

Question 16

What are native metals

Answer 16

Very unreactive metals, such as gold and platinum, that are found in the Earth’s crust as pure metals.

Question 17

Equation for metal being removed from its ore. Using carbon

Answer 17

Metal oxide + carbon = metal + carbon dioxide

Question 18

How does a blast furnace work

Answer 18

Step 1 – Heated oxygen reacts with the coke (carbon) to produce carbon dioxide and heat energy to heat up the furnace.

Step 2 – More coke is added to the furnace and reduces the carbon dioxide into carbon monoxide, a good reducing agent

Step 3 – iron oxide is reduced to iron and the carbon is oxidised to carbon dioxide

Question 19

What is a blast furnace used for

Answer 19

Melt iron ore and extract the iron which can be used to make steel and other metal products