Section 9.2 Fun Game

Which of the following indicators CANNOT be used to test for alkali?

• Red litmus paper

• Blue litmus paper

• pH paper

• Universal indicator

If a solution turn red litmus paper to blue, then

• the solution is acidic.

• the solution is alkaline.

• the solution is neutral.

• the solution may be hydrochloric acid.

After adding 2 drops of universal indicator to an solution, it turns red. The solution could be

• lemon juice

• limewater

• drain cleaner

• water

Mr. Leung measures the pH of a solution. The pH shown is 4.3. What apparatus is used by Mr. Leung?

• pH paper

• Universal indicator

• pH meter

• Mr. Leung's tougue

Which of the following indicator should be used to measure the pH of a cup of black coffee?

• Universal indicator

• pH paper

• pH meter

• Litmus solution

If a solution turns blue ______ paper red, the solution is acidic.

If a solution turns universal indicator purple, the solution is

• acidic.

• alkaline.

• neutral.

An alkaline solution should have a pH _____ 7.

• >

• <

• =

A solution is acidic. Which of the following could be its pH value?

• 3

• 7

• 9

• 14

Which of the following is an advantage of using a pH meter instead of a universal indicator?

• It can give a more accurate measurement.

• It is much more convenient.

• We do not need to clean the pH meter after use.

• Electricity is required for the pH meter to operate.