Acids and bases practice

Neutral solutions have a pH of

• pH of 2

• pH of 0

• pH of 7

• A neutral solution does not have a pH

Which is NOT a property of a base?

• Tastes sour

• Slippery

• Bitter taste

• Turns red litmus to blue

An acid’s pH is between :

• 0 to 6

• 7

• 8-14

• 6-14

In a test of pH levels, a baking soda has a pH of 9 and bleach has a pH of 12. What is true about there relationship?

• Both of the solution are Bases

• Both of the solution are Acids

• The Baking soda is an acid and the Bleach is a base

• The baking soda is a base and the Bleach is an Acid.

A base is a substance

• That releases OH- ions when dissolved in water

• That releases H+ ions when dissolved in water

• Does not release any ions when dissolved in water

• None of the above

What does pH measure?

• Concentration of H⁺

• Concentration of OH^-

• The amount of liquid in the test tube.

• The Concentration of H₂O

Properties of bases are

• feel soapy and neutralise acids

• irritate your skin and react with metals to produce bubbles

• taste sour and turn litmus red

• have pH less than 7

A substance that is 3 on the pH scale would be a(n):

• acid

• base

• neutral

• solute

Which one of the following is an example of a base?

• orange juice
• dish soap
• vinegar
• lemons

When the pH of your pool is too high, algae and bacteria can flourish, what substance could you add to lower the pH?

• salt (e.g. sodium chloride)

• chlorine

• hydrochloric acid

• sodium carbonate