Acids, Bases, pH

What does a pH scale do?

• Tells you if a substance is an acid.
• Tells you if a substance is a base.
• Measures the strength or weakness of an acid or base.
• All of these are true.

When found in food, acids are ________

• Sour
• Bitter
• Salty
• Slippery

When found in food, bases are _______.

• Sour
• Bitter
• Salty
• Soggy

Drain cleaner has a pH of 13. What is drain cleaner?

• An acid.
• A strong base.
• Neutral.
• A weak base.

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

• Acid
• Alkaline
• Base
• Buffer

What are properties of acids?

• Bitter, slippery, ph above 7
• Sour, reacts with metals, ph below 7
• Sour, reacts with metals, ph above 7
• Bitter, ph of 7, does not react with metals

The pH scale is a range from:

• 1-7
• 0-14
• 1-14
• 1-20

pH greater than 7.

• Acids
• Bases
• All

pH less than 7.

• Acids
• Bases
• All

Which is the stronger acid?

• pH 1
• pH 4
• pH 8
• pH 13