Neutralisation

Complete the word equation:

acid + alkali ---> ________ + water

• sugar

• metal

• salt

• gold

Toothpaste contains ______ that neutralises acid formed by bacteria

• alkali

• acid

• salt

• gas

Bee sting contains ________ and can be neutralised using bicarbonate of soda.

• alkali

• acid

• vinegar

• soda

Excess acid in the stomach can be neutralised by ________

• antacid

• vinegar

• hydrochloric acid

• toothpaste

Products of a neutralisation reaction are always ....

• acid + alkali

• acid + salt

• salt + water

• salt + alkali

In a neutralisation reaction, what is the function of the indicator?

• To indicate that hot water should be added

• To indicate a precipitate has formed

• To indicate the flask should be shaken

• To indicate the mixture is neutral

The reaction between an acid and alkali produces a salt and water. This reaction is called?

• acidication

• alkalisation

• neutralisation

Pure water has a pH of 7. Pure water is .......

• an alkali

• an acid

• a neutral substance

What colour does universal indicator turn when the solution is neutral?

• red

• blue

• green

The variable that is changed in an experiment is known as the ......

• dependent variable

• control variable

• independent variable