Acids and Alkalis Flashcards
1
Q
What is a universal indicator?
A
A substance which changes colour dependent on the pH
2
Q
What is neutralisation?
A
When an acid cancels out a base (alkali)
3
Q
What is a base?
A
A substance with pH > 7
4
Q
Give the equation for neutralisation
A
Acid + Alkali ⇌ water
5
Q
Give an example of neutralisation
A
Hydrochloric acid + Sodium Hydroxide ⇌ Sodium chloride + water
6
Q
What is the general equation for a metal + acid reaction?
A
Metal + Acid → Salt + Hydrogen
7
Q
What does hydrochloric acid become in salt form?
A
Chloride
8
Q
What does sulphuric acid become in salt form?
A
Sulphate
9
Q
What does nitric acid become in salt form?
A
Nitrate
