1. The pH of carrots is 5.0. How is it classified?
a. acidic
b. basic
c.indicator
d. Neutral
2. Water in an aquarium must be kept at a particular pH level so that the fish stay healthy What is the best way to prevent water from becoming too acidic or too basic?
a. Add acid to the water.
b. Add a buffer to the water.
c.Put the pH paper into the aquarium.
d. Fill the aquarium with colored water.
3. Which of the following is most likely a property of soda water (acidic mixture)?
a. It tastes bitter.
b. It will react with oils.
c. It feels slippery on the skin.
d. It will cause phenolphthalein indicator to turn colorless.
4. Which of the following is most likely a property of acid rain?
a. It tastes bitter.
b. It will neutralize a basic mixture.
C. It will turn cabbage indicator to color yellow.
d. It will produce oxygen when it reacts with oils.
5. Which of the following is most likely a property of bleach (a basic mixture)?
a. It feels sticky.
b. It tastes sour.
c.It will turn red litmus paper to blue. d. It will turn phenolphthalein indicator to yellow.
6. Which of the following is most likely a property of soapy water (a basic mixture)?
a. It feels sticky on the skin.
b. It will produce tritium ions in water.
c. It will react with metals from nitrogen.
d. It will turn phenolphthalein indicator to a pink color.
7. Which of the following is most likely a property of ammonia water (a basic mixture)
a. It tastes sour.
b. It will corrode metals.
c. It will turn red litmus paper to brown.
d. It will turn red cabbage indicator to greenish-yellow color.
