Acids and Bases

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

Holly has an unknown substance in a beaker. She wants to determine the relative pH of the unknown substance. She places a piece of blue litmus paper into the substance, and the litmus paper stays blue.
The substance in the beaker

• is a base.
• has a neutral pH.
  
• is an acid.
• does not have a pH.

Which of the following is a base?

• orange juice
• water
• vinegar
• dishwashing detergent

Which of the following statements is correct?

• Blue litmus paper turns red when placed in a base.
• Red litmus paper turns blue when placed in a base.
• Blue litmus paper stays blue when placed in an acid.
• Red litmus paper stays red when placed in a base.

 Which of the following is an acid?

• shampoo
• baking soda
• orange juice
• water

The pH of a solution is tested, and it is found to be a basic solution. Of the following choices, what could the pH have been?

• 3
• 9
• 7
• 5

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

Values from 0-14 that determine the acidity of a solution

• Punnett Square
• Matrix
• pH scale
• Math number line 

Tastes bitter.

• Acids
• Bases
• Salts
• All

What is the range of pH values in an acidic solution?

• 0-7
• 7-14
• 15-239058204958
• pH = 7