Acid and Bases- pretest

Which of the following word pairs correctly completes the sentence below?
_______ are corrosive substances characterized as having a strong smell, a sour taste, and a _______.

• Acids; pH less than 7
• Acids; pH greater than 7
• Bases; pH greater than 7
• Bases; pH less than 7

Tags

CCSS.RI.11-12.4

CCSS.RI.7.4

CCSS.RI.8.4

CCSS.RI.9-10.4

CCSS.RI.9-10.4

Which of the following is a base?

• orange juice
• water
• vinegar
• dishwashing detergent

Litmus paper can be used to determine the _______ of a substance.

• relative volume
• temperature
• relative pH
• chemical formula

 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

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

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

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

What is the approximate pH of seawater?

• 2
• 5
• 7
• 9