Acid and Base

Multiple Choice

Which of the following substances is an acid?

• Lemon

• Soap

• Baking Soda

• Vinegar

Multiple Choice

What are the characteristics of acids and bases as shown in the image?

• Acids turn blue litmus red

• Bases turn red litmus blue

• Acids have a sour taste

• All of the above

Multiple Choice

What are the properties of acids as mentioned in the image?

• Produce H+ ions in water

• Taste sweet

• React with metals to produce oxygen

• Do not conduct electricity

Multiple Choice

What is a property of bases?

• Slippery touch
• Sour taste
• Ability to dissolve metal
• Ability to form hydronium ions

Categorize

Options (6)

Tastes sour

Itchy on skin, will burn if concentrated

Red limtus paper

Tastes bitter

Feels slippery

Blue litmus paper

Organize these options into the right categories

Properties of Acids

Properties of Bases

Multiple Choice

What is an indicator in chemistry?

• A substance that changes color in acid or base

• A type of chemical reaction

• A method of measuring temperature

• A type of plant material

Multiple Choice

An acid will make blue litmus paper turn red and bases will turn red litmus paper blue. Using the pH scale and your knowledge of acids and bases, identify what your mystery substance could be.

Mystery Substance: Turns red litmus paper blue and feels slippery on your hands.

• Water

• Orange Juice

• Lemon Juice

• Bleach

Multiple Select

The table shows the pH of several solutions. Which solution is the most acidic?

• vinegar

• milk

• water

• bleach

Multiple Choice

How do changes in pH affect the growth of microorganisms?

• They have no effect

• They promote growth

• They inhibit growth

• They cause mutations

Multiple Choice

William, Aiden, and Isla are conducting a science experiment. They are testing various substances to determine if they are acidic. According to their chemistry textbook, what is the pH range of the substances they should expect to be acidic?

• 0 to 6

• 7 to 14

• 1 to 7

• 6 to 14

Multiple Choice

What is the pH range of acids?

• 0 to 6

• 7 to 14

• 1 to 7

• 6 to 14

Multiple Choice

What type of soil do some plants prefer to grow in?

• Acidic soil

• Basic soil

• Neutral soil

• Saline soil

Multiple Choice

A maple tree prefer soil that has a pH of 5.5 to 6.5.  These trees grow best in soil that is ...

• very basic

• very acidic

• slightly acidic

• slightly basic

Multiple Choice

A maple tree prefer soil that has a pH of 5.5 to 6.5.  These trees grow best in soil that is ...

• very basic
• very acidic
• slightly acidic
• slightly basic

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident