Acids, Base, and Salt

A substance has a pH value of 8. It is most likely to be what?

• Strong acid

• Weak acid

• Strong base

• Weak base

Which indicator is colourless in acid and pink in alkali?

• Litmus

• Phenolphthalein

• Universal Indicator

• Methyl Orange

Which of these taste sour?

• acids

• bases

• salts

Which of these feel slippery?

• bases

• acids

• salts

Which of these turn red litmus paper blue?

• acids

• bases

• salts

The pH scale is used to determine the strength of

• acids and bases

• chemical bonds

• electrical charges

• particles in a solution

Anything with a pH of 7 is a(n)

• neutral substance

• acid

• base

• chemical salt

Chemicals formed when an acid and a base combine.

• salts

• noble gases

• metalloids

• hydroxides

A very strong acid will have a pH of

• 0

• 14

• 5

• 9

An indicator is?

• A lab manual or guide

• Something like litmus paper that can tell you if a substance is acidic or basic

• A PS4 game where you pretend to direct traffic

• Something only scientists in a lab can use