Acids and Alkalis - Sec 2

Acids have a _______________ taste

Alkalis feel__________

Tick the household products on this list that are alkalis.

• lemon juice

• soap

• vinegar

• toothpaste

Which of these solutions are acidic?

• pH 7

• pH 13

• pH 8

• pH 2

Universal indicator can be used to find the ___________ of a solution.

A solution has a pH of 13. The solution is best described as:

• strongly alkaline

• weakly acidic

• weakly alkaline

• strongly acidic

What colour does litmus paper turn when added to an acid?

• Blue

• Red

• Green

• Colourless

What colour does litmus paper turn when added to an alkali?

• Blue

• Red

• Green

• Colourless

What colour is universal indicator in a neutral solution?

• Green
• Orange
• Purple
• Red

What colour is universal indicator in a strong alkali?

• Green
• Orange
• Purple
• Red