Acids and Alkalis

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

• To indicate that the mixture is neutral

• To indicate that hot water should be added

• To indicate that the flask should be shaken

• To indicate that a precipitate is formed

What is dissolved into the sea to cause ocean acidification?

• Carbon dioxide

• Nitrogen

• Oxygen

• Carbon monoxide

Tags

NGSS.MS-PS1-2

Bee sting contain ............................ and can be neutralize using bicarbonate soda.

• alkali

• acid

• vinegar

• soda

Tags

NGSS.MS-PS1-2

Which indicator can test for both acids and alkalis and provides a pH number of the substance being tested?

• Blue litmus paper

• universal indicator

• red litmus paper

What term is used to describe an acid cancelling out an alkali?

• neutralisation

• mixing

• dilution

• concentrating

Is blue litmus paper used to test for acids or alkalis?

• acids

• alkali's

• both

Is red litmus paper used to test for acids or alkalis?

• acids

• alkali's

• both

What pH number does a neutral substance have?

• 7

• 3

• 9

• 14

True or false:

A substance that is a weak acid would have a pH of 5-6.

• true

• false

Complete:

ACID + BASE --> ___ + ___

• metal salt + water

• metal salt + base

• metal salt + alkali

Tags

NGSS.MS-PS1-5