Acids, Alkalis And Bases

Question 1

What is the pH scale used for?

Answer 1

The pH scale is used to tell how acidic or alkaline a solution is.

Question 2

What is the ph of an acidic solution?

Answer 2

Below 7

The lower the pH, the more acidic it is.

Question 3

What is the pH of an alkaline solution

Answer 3

above 7

The higher the pH, the more alkaline it is.

Question 4

What are the colours of a pH scale

Answer 4

Acids - red, orange, yellow
Neutral - green
Alkali - blue, purple

Question 5

How can u measure the pH oh a solution

Answer 5

Using an indicator

A dye that changes colour depending on weather it’s above or below a certain pH

Question 6

What is a base?

Answer 6

A substance that will neutralise an acid

For example, metal oxides, metal hydroxides, metal carbonates and ammonia.

Question 7

How can you make an alkaline solution

Answer 7

By dissolving a soluble base in water

Soluble bases are known as alkalis.

Question 8

How can you make an acidic solution

Answer 8

By dissolving a soluble non-metal oxide in water