core practicals

Question 1

osmosis

Answer 1

measuring the intake of water using potato strips in a different percentage of sucrose each time weighing the mass before and after the submersions to see the intake of water

Question 2

photosynthesis practical

Answer 2

-bottles have 20 algae balls and hydrogen carbonate indicator
-arrange bottles at a distance (10cm) form the light source
-put a heat filter between the light source and the first bottle
-after a set time us a PH scale of hydrogen carbonate indicator to measure PH in each bottle

Question 3

mitosis experiment

Answer 3

-cut garlic to root
-crush garlic
-put garlic on slide
-add stain and drop of water
-add cover slip

Question 4

electrolysis

Answer 4

Copper is purified by electrolysis
. Electricity is passed through solutions containing copper compounds, such as copper sulphate. The anode(positive electrode) is made from impure copper and the cathode(negative)