(a) (i) State two conditions that are required for photosynthesis to take place.
(ii) How would you show that starch is formed during photosynthesis?

(b) Write a balanced chemical equation to show the reaction between hydrogen and oxygen.

(c) (i) What is a satellite?
(ii) Give one example of a natural satellite.
(iii) List two uses of artificial satellites.

(a) Define
(i) self-pollination
(ii) cross-pollination

(b) State two ways in which cross-pollinated plants are better than self-pollinated plants.

(c) Sodium chloride is prepared by the reaction between dilute hydrochloric acid and sodium hydroxide.
(i) Write a balanced equation for the reaction
(ii) What is the name given to this reaction?
(d) Describe an experiment to show that pressure acts in all directions in a liquid

(a) (i) What is a vector of a disease?

(ii) State two methods each by which the vectors of the following diseases can be destroyed:
α) river blindness;
β) malaria

(b) Write down the systematic names of the following compounds:
(i) CaCO₃
(ii) FeS
(iii) NaCl
(iv) NaOH

(c) (i) Give the two properties that are common to all states of matter.
(ii) In an experiment to determine density, a stone of mass 60 g is put into a bowl containing water
If the level of the water rises from the 60 cm3 mark to 75 cm³, determine the density of the stone

(a) Mention five differences between plants and animals

(b) Define each of the following terms, giving one example in each case
(i) compound
(ii) element

(c) (i) Give two differences between an electrical insulator and a conductor.
(ii) Draw and label a simple electrical circuit made up of a cell and a switch connected to two electrical bulbs connected in parallel