Acid Base Strength

Anything with a pH of 7 is a(n)

• neutral substance

• acid

• base

• chemical salt

A weak base will have a pH close to

• 8

• 6

• 0

• 14

A very strong acid will have a pH of

• 0

• 14

• 5

• 9

Litmus paper works because it has been treated with

• natural dyes

• radioactive isotopes

• halogens

• organic inhibitors

Unsweetened chocolate tastes bitter because chocolate contains a

• base

• acid

• chemical salt

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

When an equal strength acid and base are mixed, what kind of chemical reaction occurs?

• Neutralization

• Combustion

• Oxdation

• Decomposition

Which of the following is a chemical property of a base

• a slippery feel

• conducts an electric current

• turns red litmus paper blue

• forms hydronium ions in water

Litmus paper can tell you if a solution is acidic, neutral or basic by changing color when placed in a solution.  If you test a base with litmus paper, it will turn ____________.

• purple

• red

• blue

• pink

Tastes bitter.

• Acids

• Bases

• Salts

• All