Unit 2 Acids/Bases

The enzymes in the small intestine work best at a pH of

• 7
• 4
• 2

These two types of molecules are composed of carbon, hydrogen, and oxygen. Both are digested in the small intestine.

• proteins and lipids
• proteins and carbohydrates
• carbohydrates and lipids

The large intestine primarily absorbs

• proteins
• carbohydrates
• water
• lipids

The main ion in acids is

• hydroxide
• oxygen
• hydronium

The main ion in bases is

• hydroxide
• oxygen
• hydronium

Which is NOT a property of an acid?

• conducts electricity
• tastes bitter
• turns blue litmus paper red
• corrosive

When a substance is dissolved in water and breaks down, it

• ionizes
• dissolves
• neutralizes

_______acids and bases conduct electricity well.

• weak
• neutral
• strong

Cations (+ ions) and anions (- ions) make up

• water
• salts

Which is not a salt we commonly find in our foods?

• Baking soda
• calcium chloride
• potassium chloride
• sodium chloride