C5- Chemical Changes

Question 1

What do you get when you mix metal and water

Answer 1

Metal hydroxide and Hydrogen

Question 2

What do you get when you mix metal and an acid

Answer 2

Salt and hydrogen

Question 3

What do you get when you mix metal and oxygen

Answer 3

Metal oxide

Question 4

What are the 3 methods of extracting metals

Answer 4

Reduction
Electrolysis
Displacement

Question 5

Whether a metal is worth extracting is dependant on….

Answer 5

How easy it is
How much metal the ore contains
The demand for the metal

Question 6

What is a salt

Answer 6

A compound formed when the hydrogen in an acid is wholly or partially replaced by metal

Question 7

What is a redox reaction

Answer 7

When oxidation and reduction both occur in the same reaction

Question 8

What do you get when you mix an acid and a base

Answer 8

Salt and water

Question 9

What is a strong acid

Answer 9

Ionises completely in solution

Question 10

What is a weak acid

Answer 10

Partially ionised
Does not release as many H+ ions