Acids and Bases

What is the normal pH of the blood?

• 9

• 7.35

• 7

• 6.5

What indicator of acid and bases gives an accurate pH level?

• red litmus paper

• blue litmus paper

• pH paper

• pH meter

The substance is an Acid if the blue litmus paper turn to red.

• True

• False

Which of the following is a base/alkaline substance?

• NaCl

• NaOH

• HCl

• H2SO4

Which of the following is NOT an example of an acidic substance?

• detergent soap

• calamansi

• lemon

• coke

Which of the following exhibit the Arrhenius Base substance?

Which of the following pH level range in acidic level?

• pH less than 7

• pH more than 7

• pH 7

What is an Arrhenius acid?

• A substance3 that produce H⁺ in water

• A substance that produces OH in water

A student test an unknown solution and finds it slippery and turn red litmus paper to blue. What can the student infer?

• The solution contains an acid.

• The solution contains a base.

• The solution is neutral.

What is an Arrhenius base?

• A substance that produces H⁺ hydrogen ion in water.

• A substance that produces OH^- hydroxide ion.

• A substance that produces OH⁺ ion in water.

• A substance that produces H^- ion in water.