Acids and Bases

What does a pH scale do?

• Tells if a substance is an acid or base

• Measures the strength and weakness of acids and bases

• Both statements are correct

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

• Acid

• Alkaline

• Base

• Buffer

What is a base?

• Has a pH of 3

• Has a pH of 7

• substances that are slippery to the touch; turns red litmus paper blue

Which of the following statements about acids is true?

• They taste sweet.

• They taste sour.

• They have a pH between 8-14.

What is another name for a base?

• Acid

• Alkaline

• pH

Which of the following substances is acidic?

• baking soda

• lemon-lime soda

• distilled water

• soap

What is a property of bases?

• Slippery touch

• Sour taste

• Ability to dissolve metal

• Ability to form hydronium ions

How do acidic solutions taste?

• Delicious

• Sweet

• Bitter

• Sour

Weaker bases have a pH closer to...

• 8

• 0

• 14

• 4

Stronger acids have a pH closer to...

• 7

• 0

• 14

• 9