6th grade second quiz acids and alkalis

What is the pH of a weak acid?

• 12

• 9

• 6

• 8

What color does Universal Indicator go in water?

• blue

• green

• red

• yellow

What is the color of Universal Indicator in strongly alkaline solution?

• purple

• blue

• green

• orange

Which is the pH of a strong alkaline?

• 11

• 13

• 7

• 1

What is the color of litmus paper in lemon juice?

• red

• yellow

• blue

• purple

What color does litmus change to in potassium hydroxide?

• red

• green

• purple

• blue

What color does Universal Indicator change in sulfuric acid?

• purple

• red

• yellow

• pink

Which one of the followings contain acid?

• coffee

• soap

• toothpaste

• washing soda

Which one of the followings is an alkali?

• calcium hydroxide

• pure water

• carbon dioxide

• acetylsalicylic acid

What does this hazard symbol tell us?

• something is flammable

• something is oxidising

• something is corrosive

• something is irritant