acid and base

A substance is found to have the following characteristics:

Very bitter taste

Feels slippery to the touch

Produces OH- ions when dissolved in water

In what category would the substance be classified?

• acid

• base

• enzyme

• fatty acid

HF is...

• an acid

• a base

• a salt

• an ionic compound

HNO₂

• a base

• a salt

• an acid

• an ionic compound

KOH is ...

• an acid

• a base

• a salt

• an ionic compound

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 statements about acids is true?

• They taste sweet.
• They taste sour.
• They have a pH between 8-14.

Which item is an acid?

• Drain cleaner
• Ammonia
• An orange.

What does a pH scale do?

• Tells if a substance is an acid or base
• Measures the strength and weakness of acids and bases
• Both statements are correct

You can eat or drink an acid.

• True 
• False

Vinegar is a base.

• True
• False