Y8 CHEM T1-Acids and Alkalis

Question 1

What is litmus?

Answer 1

An indicator that turns red in acids and blue in alkaline

Question 2

What does the red cabbage indicate?

Answer 2

Red in acid purple when neutral and green in alkalise

Question 3

What is number nine on the pH scale?

Answer 3

Weak alkali and it is greeny blue

Question 4

What is four on the pH scale?

Answer 4

A weak acid and it’s orange/yellow

Question 5

What is 12 on the pH scale?

Answer 5

It’s a strong alkaline and purple

Question 6

What acid can be dangerous and corrosive?

Answer 6

Strong acid such as sulphuric and nitrate acid

Question 7

How do alkalis feel?

Answer 7

Soapy

Question 8

What does hydrochloric acid ,nitric acid and sulphuric acid make?

Answer 8

Hydrochloric acid makes chloride. Nitric acid makes nitrate. Sulphuric acid makes sulphate.

Question 9

What will metal carbonate do?

Answer 9

Neutralise an acid

Question 10

What is the general equation for metal carbonate and acids?

Answer 10

Acid+ metal carbonate➡️ salt+ carbon dioxide+ water

Question 11

How can you test for carbon dioxide?

Answer 11

Using a lime water

Question 12

What are metal oxides and hydroxide referred to as?

Answer 12

Bases and a soluble base is normally called alkali

Question 13

What is the equation for neutralisation?

Answer 13

Acid+ base➡️ salt+ water

Question 14

What is the metal and acid reaction?

Answer 14

Metal+ acid➡️ Salt+ hydrogen

Question 15

How can you test for hydrogen?

Answer 15

Using the squeaky pop test