Acids and Alkali Flashcards
1
Q
What is an acid ?
A
An acid is a substance that has a number less than 7 in the pH scale.
2
Q
What is an alkali ?
A
An alkali is a substance that has a number more than 7 in the pH scale.
3
Q
What is an indicator ?
A
An indicator is a substance that determines whether something is an acid or an alkali.
4
Q
What is the pH scale ?
A
It is a measure of how acidic or alkaline a solution is.
5
Q
What is a neutralisation reaction ?
A
It is an acid reacting with a base or an alkali to make a salt and water.
6
Q
What is a salt ?
A
It is a compound and we make it when an acid and a metal react together.
