Acids and bases

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.

Tags

NGSS.MS-PS1-2

 Which of the following is an acid?

• shampoo
• baking soda
• orange juice
• water

Tags

NGSS.HS-PS1-1

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

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

Many cleaning solutions are bases. Which of the following is a property of most bases?

• feels slippery
• white color
• can only be liquid
• tastes sour

Tastes bitter.

• Acids
• Bases
• Salts
• All

Which of these pH values would indicate that a solution is a weak base?

• 4
• 5.6
• 8
• 13

Soap is a weak base.  What is true about the taste of bases?

• they taste sour
• they taste sweet
• they taste bitter
• they taste salty

Which food is the most acidic?

• bananas
• lemon juice
• orange juice

Tags

NGSS.MS-PS1-2