Acids & Bases

Which has a pH below 7?

• Acid
• Base

Which has a bitter taste?

• Base
• Acid
• flagella
• cila

Which has a slippery texture?

• Acid
• Base

Turns litmus red

• Acids
• Bases
• All

What pH is the strongest base?

• 1

• 7

• 4

• 14

What colour does a base turn red litmus paper?

• Red

• Blue

What methods can you use to measure the pH of a solution?

• Observing color or clarity
• Measuring mass or volume
• Measuring density or electrical conductivity
• Using acid base-indicators or pH meters

Tastes Sour

• Acids
• Bases
• Salts
• All

Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?

• strongly acidic
• slightly acidic
• strongly basic
• slightly basic

Which of these pH values would indicate that a solution is a weak base?

• 4
• 5.6
• 8
• 13