Acids and Bases

Which of the following is a property of ionic compounds?

• They have low melting points.

• They contain no charged particles.

• They have low boiling points.

• The form hard, brittle crystals.

If a substance is found at the high end of the ph scale it is a(n)?

• salt

• acid

• crystal

• base

What color would litmus paper turn in a solution of baking soda(8.5)? Explain your answer in terms of pH.

• Red. Baking Soda has a pH of about 8.5, which means it is an acid and it would turn blue litmus paper red.

• Blue. Baking soda has a pH of 8.5, which means it is a base and would turn red litmus paper blue.

The ions in an ionic compound form an orderly, three-dimensional arrangement called a ....

• acid

• crystal

• base

• pH scale

An ionic compound made from the neutralization of an acid with a base is a......

• salt

• indicator

• base

• acid

You can find the pH of a substance by using....

• plain paper

• a conductivity tester

• a thermometer

• litmus paper

Why would you expect soap to taste bitter?

• Soap is a base, and a base tastes bitter.

• Soap is an acid, and an acid tastes bitter.

An acid has a pH value that is.....

• lower than 7

• higher than 7

• equal to 7

• none of the above

The reaction between an acid and a base is called.....

• crystal

• neutralization

• corrosion

• pH scale

What does the pH of drain cleaner (14) tell you about the danger of such a product?

• A high pH means that drain cleaner is a base. Strong bases can irritate the skin.

• A high pH mean that drain cleaner is a base. A weak base will not irritate the skin.