Acids and Bases

What happens when acids and bases react with one another?

• Neutralization occurs forming a salt and usually water

• explosions occur always

• the acid turns into a base

• the base turns into an acid

Blue litmus paper will turn ____________ in the presence of a neutral solution.

• red

• pink

• violet

• remain blue

How are fruit juices classified according to their pH?

• classified as a base

• classified as a neutral solution

• classified as a base or neutral solution

• classified as an acid

In general, what types of substances tend to be alkaline (basic)?

• fruit juices

• cleaners (hand soap, oven cleaner, bleach, drain cleaner)

• cola, coffee

• vinegar

What taste does soap have?

• bitter

• sour

• sweet

• salty

What substances produce hydroxide ions (OH-) when dissolved in water?

• bases

• acids

• neutral solutions

• acids and neutral solutions

What substances produce hydrogen ions (H+) when dissolved in water?

• bases

• neutral solutions

• acids

• bases and neutral solutions

Which of the following will tell the actual pH of a solution?

• red litmus paper

• blue litmus paper

• phenolpthalein

• pH paper

If blue litmus paper turns red, what is it?

• base

• neutral solution

• acid

• water

An example of a base is:

• soap

• lemon

• vinegar

• water