Module #10: Acid/Base Chemistry

Question 1

Indicator

Answer 1

A substance that turns one color in the presence of acids and another color in the presence of bases

Question 2

What are the three general properties of bases?

Answer 2

1. Bases taste bitter
2. Bases are slippery to the touch when dissolved in water
3. Bases turn red litmus paper blue

Question 3

Acid

Answer 3

A molecule that donates H⁺ ions

Question 4

Base

Answer 4

A molecule that accepts H⁺ ions

Question 5

What are the three general properties of acids?

Answer 5

1. 1. Acids taste sour
2. Acids are covalent compounds that conduct electricity when added to water
3. Acids turn blue litmus paper red

Question 6

What is the Hydronium polyatomic ion?

Answer 6

H₃O⁺

Question 7

Amphiprotic

Answer 7

Compounds that can act as either an acid or a base, depending on the situation.

Question 8

What do ionic compounds do when they dissolve?

Answer 8

When ionic compounds dissolve, they split into their constituent ions.

Question 9

Polyprotic acids

Answer 9

An acid that can donate more than one H⁺ ion

Question 10

Molarity (M)

Answer 10

A concentration unit that tells how many moles of a substance are in a liter of solution. It is determined by taking the number of moles of a substance and deviding by the number of liters of solution.

Question 11

Dilution

Answer 11

Adding water to a solution in order to decrease the concentration

Question 12

Titration

Answer 12

The process of slowly reacting a base of unknown concentration with an acid of known concentration (or vice versa) until just enough acid has been added o react with all of the base. This process determines the concentration of the unknown base (or acid).