PLANT PH INDICATORS Materials and
tools Colour
test pit boards (plastic sheets cut from 1.5L Voltic bottle), plastic straws
or droppers, 250ml glass beakers, improvised beakers, improvised spirit
burners, funnels, methyl alcohol, cotton gauze or filter paper, flame tree
flower petals, beet roots, bronze colour leaves, methyl orange, phenolphthalein, litmus
paper, universal indicator, soil PH indicator, a sheet of white paper and colour
pencils. Activities 1.
Collect fresh flame tree flower petals (at
least 10 petals per group), beet root slices, bronze colour leaves.
2.
Chop or cut them into small pieces and put
them in beakers, respectively. 3.
Add approximately 50ml of fresh water into
the beakers, respectively. 4.
Boil the mixture of water and plant tissue
about 5 minutes. 5.
Filter the liquid using gauze and the
funnel. 6.
Drop the filtrate in seven partitions of a colour
test pit board. 7.
Drop the designated acid or alkali indicated
below into a pit. 8.
Record the colour of the
liquid. ACTIVITY SHEET PLANT PH INDICATORS
Record the colours
on the colour
test pit boards. STUDENT WORKSHEET SAMPLE |