Ecz Science gce grade 12 2017 paper 2

Posted on February 2, 2020 by admin

1. Methane is a green house gas. Which process releases methane into the air?

A Combustion of petrol

8 Decay of vegetable matter

C Volcanic activity

D Photosynthesis

2. When the temperature of a chemical reaction is increased, the kinetic energy of particles increases and the… . . .

A number of effective collisions increases, remember of effective collisions decreases,

C particles become far apart from each other.

D particle become closer to each other

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