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Chapter 23, 28

Revise Chemistry in Everyday Life Fossil Fuels and Plastics

QuestionAnswer
What do we need fuels for? Fuels power all the machines we have today.
What are fossil fuels? Fossil fuels are fuels which took millions of years to form and which we cannot renew. They are a finite fuel.
Give examples of fossil fuels. Coal, oil, gas.
What are they a source of? Hydrocarbons.
What do fuels need to burn? Oxygen and a source of ignition.
What two things do they produce when they are burned? Carbon dioxide and water.
What is natural gas made of? Methane.
What is the greenhouse effect? The greenhouse effect is the trapping of heat from the sun due to greenhouse gases in out atmosphere.
What gas causes the greenhouse effect? Carbon dioxide.
What is acid rain? Acid rain is rain that has turned into a weak acid and damages buildings and farm land.
What acids cause acid rain and where do they come from? Carbonic acid and sulphuric acid. They come from the gases given off while burning of fossil fuels.
What are the effects of CO2 and SO2 on the environment? CO2 is one of the main greenhouse gases, and SO2 can create acid rain.
What is the effect of acid rain on limestone and on plants? It slowly dissolves limestone and can burn plants and destroy their soil.
What are plastics? Plastic are man made long chain polymers.
What are they made of? They are made from the products of crude oil.
Outline the role of crude oil in the production of plastics. Crude oil is separated out into it's parts at different temperatures, plastics are one of these byproducts.
Discuss the impact of plastics on the environment. Plastics take hundreds of years to breakdown and never fully return to their original state. This leaves lots of plastics as waste in the environment.
What role does chemistry play in the pharmaceutical industry? Chemists help develop new drugs and treatments for the pharmaceutical industry.
What role does chemistry play in medicine? Chemists make medicine to treat illness.
What role does chemistry play in the production of food? Chemists make new flavours, additives and preservatives to keep food fresher for longer.
Created by: SC Dave
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