Acids and Bases Regents

What result would you expect if you tested the pH of a fizzy drink, such as cola?

• acidic

• alkaline

• neutral

What result would you expect if you tested the pH of bleach?

• acidic

• alkaline

• neutral

This hazard symbol is often seen on bottles containing acids or alkalis. What does it mean?

• the chemical is a biohazard

• the chemical is corrosive

• the chemical is flammable

• the chemical is toxic

What colour will universal indicator be in a neutral solution?

• red

• blue

• green

• yellow

If universal indicator turns purple what could be the pH of the solution

• 1

• 5

• 7

• 9

• 13

If universal indicator turns yellow what could be the pH of the solution

• 1

• 5

• 7

• 9

• 13

What happens to the pH of an acid when water is added to it?

• The pH will increase

• The pH will decrease

• The pH will stay the same

Which of the following is true for a neutral solution?

• the hydrogen ion concentration is higher than the hydroxide ion concentration.

• the hydrogen ion concentration is lower than the hydroxide ion concentration

• contains equal numbers of hydrogen and hydroxide ions

Which of the following is true for an acidic solution?

• the hydrogen ion concentration is higher than the hydroxide ion concentration.

• the hydrogen ion concentration is lower than the hydroxide ion concentration

• contains equal numbers of hydrogen and hydroxide ions

Which of the following is true for an alkaline solution?

• the hydrogen ion concentration is higher than the hydroxide ion concentration.

• the hydrogen ion concentration is lower than the hydroxide ion concentration

• contains equal numbers of hydrogen and hydroxide ions