Acid and base

Base change red litmus paper to blue.

• True

• False

Character of acid is having sour taste.

• True

• False

Choose the correct answer. Acid or base?

• Acid

• 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

KOH is ...

• an acid

• a base

• a salt

• an ionic compound

Phenolophalein turns from clear to pink when the pH turns

• acidic

• basic

• saline

• ionic

What completely ionizes/dissociates in solution?

• Weak acids

• Strong acids

• Strong Salts

• weak alkaline

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

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

An acid is substance that turns methyl orange into

• red

• blue

• purple

• yellow