gr 10-chemistry (unit 3.2)

Question 1

fossil fuel creation process

Answer 1

1) solar energy is transformed into chemical potential energy by photosynthesis
2) remains of organisms contain large amounts of chemical potential energy
3) remains of organisms are buried under layers of sediment
4) pressure heat and millions of years later gets turned into fossil fuels
5) fossil fuels are extracted and burned they release carbon dioxide

Question 2

whats absorption?

Answer 2

energy is taken up by matter without being reflected or

transmitted

Question 3

what do photovoltaic cells

Answer 3

photovoltaic cells transform light energy directly into electrical kinetic energy