Which of the following is NOT a property of an acid?

• Tastes sour

• Turns blue litmus paper red

• Corrodes metals

• Feels slippery

What is the pH of water?

• n<7

• n>7

• 7

• 0

What gives lemon a sour taste?

• acid

• alkali

• base

• salt

You are presented with an unknown substance and you are asked to identify whether it is an acid or base. What is the BEST and SAFEST method to do?

• To taste the substance.

• To touch the substance.

• To smell the substance.

• To use a litmus paper.

Which of the following statements is true about base?

• It tastes sour.

• It corrodes metal.

• It turns blue litmus paper to red.

• It feels slippery to the touch.

Which of the following is a pH of a strong base?

• 1

• 5

• 8

• 13

Which of the following is a pH of a weak acid?

• 1

• 6

• 8

• 12

Which of the following statements is TRUE about acids?

• It is mostly used in household cleaning.

• It gives coffee its bitter taste.

• It contains more H⁺ ions.

• It contains more ^-OH ions.

Which of the following substances DOES NOT conduct electricity?

• Strong acid

• Weak acid

• Pure water

• Strong Base

What is the pH range of bases?

• 0-7

• 3-11

• 8-14

• 0-14