[SC F2] 6.1 Properties of Acids and Alkalis

Acids turn red litmus paper blue.

• True

• False

What is the pH range of alkalis?

• less than 7

• pH 7

• more than 7

Acids

(More than one answer)

• pH value less than 7

• Tastes bitter

• Corrosive

• Reacts with metals to produce hydrogen gas

Alkali

(More than one answer)

• pH value more than 7

• Tastes bitter

• Corrosive

• Tastes sour

Acid has ____________ taste.

• bitter

• sour

• no

Both acid and alkali can be corrosive.

• Yes

• No

Alkalis react with metal and produce hydrogen gas.

• Yes

• No

Alkalis

• turns blue litmus paper red

• turns red litmus paper blue

Alkali has ____________ taste.

• bitter

• sour

• no

What are the examples of acid ?

• Sodium hydroxide solution

• Soap water

• Hydrochloric acid

• Vinegar