Acids and Bases

Acids and Bases

Multiple Choice

The pH scale is a range from:

• 1-7
• 0-14
• 1-14
• 1-20

Multiple Choice

Milk is a very weak acid. What might its pH value be?

• 6.5

• 7.8

• 4.2

• 12.2

Multiple Choice

Which of these pH values represent an acid?

• 4

• 8

• 10

• 12

Multiple Choice

Which of the following is a property of a base?

• bitter taste

• reacts with metals

• salty

• sour taste

Multiple Choice

Which of the following pH values represents a base?

• 2.1

• 4.6

• 6.8

• 8.1

Multiple Choice

The strongest bases have pH values close to

• 0

• 14

• 7

• 5

Multiple Choice

What is the pH of water?

• 0
• 4
• 7
• 14

Multiple Choice

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

• 3

• 5

• 7

• 9

• 11

Practice Questions

Multiple Choice

Ammonia has a pH of 12.  Ammonia is __________.

• an acid
• a base
• an element
• a metal

Multiple Choice

Which has a pH below 7?

• Acid
• Base

Multiple Choice

Which of these solutions is an acid?

• Dish Soap: pH of 12
• Tomato Soup: pH of 4
• Baking Soda: pH of 9
• Drain Cleaner: pH of 14

Multiple Choice

Bases turn blue litmus paper red.

• True

• False

Multiple Choice

Bases will turn litmus paper __________, while acids will turn litmus paper __________.

• blue.....red
• red.....blue
• pink.........colourless
• colourless..........pink

Multiple Choice

According to the image, the substance tested is a...

• Acid

• Neutral

• Strong Acid

• Base

Multiple Choice

Examine the results (color change) of the pH paper shown in the picture. What type of substance was tested?

• an acid

• a base

• a neutral substance

• none of the above

Multiple Choice

Carrie's teacher hands out test tubes filled with different chemicals and tells the students to identify their liquid as an acid, base, or neutral chemical. Carrie's test tube contains a clear chemical. She adds phenolpthalein to her test tube and gently moves the tube from side to side. A few moments later, the chemical in the test tube turns bright pink.

What type of chemical does Carrie have?

• Carrie has a neutral chemical.

• Carrie has an acidic chemical.

• Carrie has a basic chemical.

• The type of chemical Carrie has cannot be determined.