N4 Chemistry Unit 1

Front

Tooth erosion is caused by acid in the mouth. Which alkaline substance can be used to neutralise the acid?

Back

toothpaste

Front

Wasp stings are painful because the sting is alkaline. Which household substance can you apply to the sting to neutralise it?

Back

Vinegar or lemon juice

Front

Bee stings are painful because the sting is acidic. Which household substance can you apply to the sting to neutralise it?

Back

baking soda

Front

What can be used to measure the pH of different substances?

Back

pH paper or a pH meter

Front

What will happen to the pH of water when a soluble metal oxide is added to it?

Back

It will increase.

Front

What will happen to the pH of water when a soluble non-metal oxide is added to it?

Back

It will go down.

Front

What type of solution is produced when a soluble metal oxide is added to water?

Back

Alkaline

Front

What type of solution is produced when a soluble nonmetal oxide is added to water?

Back

Acidic

Front

What will happen to the pH of water when an insoluble non-metal oxide is added to it?

Back

It will remain neutral.

Front

What will happen to the pH of water when an insoluble metal oxide is added to it?

Back

It will remain neutral.