pH & Fermentation Review

Bread is a product of fermentation that contains bubbles. These bubbles come from:

• Carbon Dioxide
• Lactic Acid 
• Oxygen
• Water

Which of the following is NOT made by fermentation

• Sauerkraut
• Bread
• Olive oil
• Yogurt

The pH scale is a range from:

• 1-7
• 0-14
• 1-5
• 1-20

A(n) ______ is a substance with a pH less than 7

• Acid
• Alkaline
• Base
• Buffer

A(n) _______ is a substance with a pH greater than 7.

• Base
• Acid
• Buffer
• Water

What is the only substance with a neutral pH of 7?

• Milk
• Orange Juice
• Water
• Blood

Complete the sentence.
A substance that is more basic has a _____ pH than a substance that is acidic.

• lower
• higher
• the same
• none of the above

A base is a substance

• That releases OH- ions when dissolved in water

• That releases H+ ions when dissolved in water

• Does not release any ions when dissolved in water

• None of the above

An acid

• is a substance that releases H+ ions when dissolved in water

• is a substance that does not release any ions when dissolved in water

• is a substance that releases OH- when dissolved in water

• releases an equal amount of OH- and H+ ions when dissolved in water

Water is a neutral because

• it has more H+ ions than OH-

• it has more OH- ions than H+

• it does not produce any ions

• it has an equal amount of H+ and OH- in solution