Acids and alkalis

what does PH measure?

• How dilute a solution is

• How acidic or alkaline a solution is

• The colour of a solution

• Whether a solution is safe to drink

what can we use to measure PH

• indicator

• ruler

• measuring cylinder

• mass balance

pure water has a pH of?

• 0

• 3

• 7

• 12

what is the largest number on a pH scale?

• 10

• 14

• 22

• 20

How would I know that a solution is acidic?

• universal indicator turns black

• universal indicator turns red

• universal indicator turns blue

• universal indicator turns green

How would I know a solution is alkaline?

• universal indicator turns orange

• universal indicator turns green

• universal indicator turns red

• universal indicator turns purple

what colour is universal indicator in a neutral solution ?

• red

• green

• blue

• yellow

What does this symbol mean?

• explosive

• toxic

• corrosive

• flammable

How should we protect our eyes during practical's?

• close your eyes

• we shouldn't

• glasses

• goggles

A pH of 2 indicates a ...

• acid that is red

• strong acid that is blue

• alkali that is purple

• strong acid that is red