T5 YR10 - Chemical changes

Question 1

Name 3 of the most reactive metals?

Answer 1

Lithium, sodium, potassium

Question 2

What gas is always produced if metal reacts with metal?

Answer 2

Metal hydroxide

Question 3

What gas is always produced when metal reacts with acid?

Answer 3

Hydrogen gas

Question 4

Define a displacement reaction?

Answer 4

Where a more reactive metal will displace a less reactive from a compound in a solution

Question 5

What is reduction?

Answer 5

Loss of oxygen but gain of electrons

Question 6

What is oxidation?

Answer 6

Gain of oxygen but loss of electrons

Question 7

What is an ore?

Answer 7

A rock containing enough metal to make it economic to extract the metal

Question 8

How do we extract metals that are higher than carbon in the reactivity series?

Answer 8

Electrolysis and carbon cannot displace the metal

Question 9

What is native?

Answer 9

Unreactive metals, found as elements in nature

Question 10

What forms a blue solution?

Answer 10

Copper sulfate

Question 11

What happens when a metal carbonate and acid react?

Answer 11

Salt + water + Carbon dioxide

Question 12

What is made when a metal reacts with an acid?

Answer 12

Salt + hydrogen

Question 13

What are 2 main properties of transition metals?

Answer 13

High melting points, form ions with different charges

Question 14

What is a weak acid?

Answer 14

When some of the molecules ionise and split from H+

Question 15

What is a strong acid?

Answer 15

Where all molecules ionise and split up from H+