Red Cabbage Indicator

Homemade indicatorEquipment-Beaker of water-Mortar and pestle-Filter and filter paper-Bottle-Piece of Red Cabbage

The best indicator is dark purple… not too watery!

Method1.Rip cabbage into small bits2.Grind cabbage with the mortar and pestle 3.Add a little water4.Filter the red cabbage solution into the bottle5.Try to collect a quarter / half a bottle of solution

10 Minutes

10 Minutes

Red Cabbage pH scale

neutralStrong

acidStrong alkali

Equipment- Beaker of water- Mortar and pestle- Filter / filter paper- Bottle-Red Cabbage

Task 1On a piece of A4 paper

1.Write your name

2.Draw a labelled, scientific drawing, of the apparatus needed to make red cabbage indicator

3.Write a scientific method describing how to make red cabbage indicator. A good method should:

Be detailed

Be written in past tense

Not use the words I, we or you

pH PosterInformation Task A ‘Universal Indicator’ pH scale

Instructions of how to make ‘Red Cabbage Indicator’

A ‘Red Cabbage Indicator’ pH scale

Examples of acids, alkalis and neutral substances

Design Task Colourful

Easy to read

BrainPop

http://www.brainpop.com/science/matterandchemistry/phscale/