Acids and Alkalis Revision Y9

What do everyday acids taste like?

• Sweet

• Bitter

• Sharp or sour

• Salty

How do everyday alkalis feel?

• Rough

• Slippery and soapy

• Sticky

• Dry

What is the pH of a neutral substance?

• 0

• 7

• 14

• 10

What is the pH range of acidic substances?

• 0 to 7

• 7 to 14

• 0 to 14

• 0 to 6

What does an indicator do in a solution?

• Changes temperature

• Changes color

• Changes taste

• Changes texture

What is produced when an acid reacts with an alkali?

• Gas and water

• Salt and water

• Acid and base

• Metal and water

What type of salts does hydrochloric acid produce?

• Nitrate salts

• Sulphate salts

• Chloride salts

• Phosphate salts

What is the pH of acid rain?

• Above 7

• Below 5.6

• Below 7

• Below 3

Which gas reacts with water to form carbonic acid?

• Sulphur dioxide

• Nitrogen dioxide

• Carbon dioxide

• Oxygen

What is the effect of acid rain on buildings?

• Strengthens them

• Causes chemical weathering

• Makes them waterproof

• Cleans them