Acid/Base

Has a pH greater than 7

• Acid

• Base

Reacts with metals to produce hydrogen gas (H₂)

• Acid

• Base

Has a pH less than 7

• Acid

• Base

Water is a(n):

• Acid

• Base

• Neither

• Both

What is the pH scale used for?

• To measure how much liquid is in a solution.

• To measure the level of oxygen in a solution.

• To measure the level of acid in a solution.

The esophagus is the tube that connects the mouth to the stomach. Heartburn occurs when some of the stomach juices flow backwards up the esophagus. To help relieve heartburn, a person should take medicine that is

• neutral
• basic
• 
  acidic or basic.
  
• acidic

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

Tags

NGSS.MS-PS1-2

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.

Tags

NGSS.MS-PS1-2

Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?

• strongly acidic
• slightly acidic
• strongly basic
• slightly basic

Tags

NGSS.MS-PS1-2

What would be considered the weakest base? 

• 8
• 14
• 7.8
• 11.6