Chapter 12: Acids and Bases

A substance is found to have the following characteristics:

Very bitter taste

Feels slippery to the touch

Produces OH- ions when dissolved in water

In what category would the substance be classified?

• acid

• base

• enzyme

• fatty acid

Which of these pH values represent an acid?

• 4

• 8

• 10

• 12

Which of the following are properties of acids?

• They conduct electricity when dissolved in water

• They taste sour

• They react with metals to produce hydrogen gas

• All of the answer choices are correct

Bases have many uses. They are mainly used to make

• cleaning products

• soaps

• concrete

• all of the answer choices

Tags

NGSS.HS-ETS1-3

Which of the following pH values represents a base?

• 2.1

• 4.6

• 6.8

• 8.1

If the substance is neutral, what would the pH be?

• 3

• 5

• 7

• 9

• 11

If an acid is combined with a base of equal strength, the result will most likely be

• a neutral solution.
• a stronger acid.
• impossible to tell without testing the pH.
• a stronger base

What would be considered the weakest base?

• 8

• 7.8

• 11.6

• 14

Pure water has a pH of 7. Pure water _______.

• is a base

• is a neutral substance

• could be either an acid or a base

• is an acid

pH is the measure of the concentration of ______.

• Acids

• H+ ion

• OH- ion

• Base