Unit 3 Review

Your mother has an unlabeled bottle of clear liquid in the refrigerator. You ask your mother about it, and she tells you that she bought it at the store for you to drink but the label must have fallen off. You pour a small cup of the liquid and taste it, and it has a distinctly sour flavor. The pH of this liquid is MOST likely

• an acid

• a base

• a neutral

• a car

A reaction between an acid and a base is called a(n) ________________ reaction.

• hydro

• neutralization

• ionization

• glucose

Which statement is true about tomato juice?

• It is an acid.

• It has a pH level of 7.0.

• It is a strong nature base.

• It is a weak base.

Which statement could ONLY be accurate for a base?

• It is common in juices.

• It can be found in the stomach.

• It can dissolve a copper penny.

• It includes cleaner such as bleach.

Which is the strongest acid?

• lemon juice

• soap

• drain cleaner

• milk

Which is the strongest base?

• drain cleaner

• soap

• apple juice

• vinegar

What property do all three of these common household substances have in common?

Bleach, detergent, ammonia

• They are all acidic.

• They all taste sour.

• They all have a pH of 7.

• They all turn litmus paper blue.

The following liquids would turn red litmus paper blue.

• ammonia, lemon juice, water

• water, vegetable oil, soap

• soap, toothpaste, drain cleaner

• apple juice, lemonade, tomato soup

The following liquids would turn blue litmus paper red.

• ammonia, lemon juice, water

• water, vegetable oil, soap

• soap, toothpaste, drain cleaner

• apple juice, lemonade, tomato soup

Oven cleaner is a highly caustic chemical that reacts with baked on foods. It is dangerous to the touch and has a very slippery feel. What is the likely pH of oven cleaner?

• below 4

• around 7

• above 10

• between 5 and 7