gcse core chemistry exam tip; you must be able to link the products of burning fossil fuels with...

GCSE Core Chemistry

Exam tip; You MUST be able to link the products of burning fossil fuels with Exam tip; You MUST be able to link the products of burning fossil fuels with acid rain (SOacid rain (SO22), global warming (CO), global warming (CO22) & global dimming (particulates). You ) & global dimming (particulates). You

should also know about some developments to overcome problems with fuelsshould also know about some developments to overcome problems with fuels

KeywordsKeywords:: Greenhouse gas, global Warming, global dimming, acid Greenhouse gas, global Warming, global dimming, acid rainrain

Prior Learning:Prior Learning:Know what is produced when fuels combust Know what is produced when fuels combust completely & incompletelycompletely & incompletely

GCSE Core Chemistry


should also know about some developments to overcome problems with fuelsshould also know about some developments to overcome problems with fuelsLearning Objectives: Identify and explain • That burning fuels has a negative environmental impact.• How we can reduce the pollution from burning fuels.

I will be successful in this lesson if I can:

• State what causes global warming, global dimming and acid rain (Lvl C).• List some ways of reducing pollutants released when we burn fuels (Lvl C).• Explain how acid rain is produced, and how it can be reduced (Lvl A).• Discuss the relationship between global dimming and global warming (Lvl A). •Explain methods of reducing pollutants from fuels (Lvl A).

GCSE Core Chemistry



1.SO2 causes acid rain

CO2 causes global warming &

Particles cause global dimming2. Sulfur can be removed

from fuels before they are burnt eg in vehicles3. SO2 can be removed

from the waste gases after combustion eg in power stations

GCSE Core Chemistry



DEMONSTRATION

Write a word & balanced symbol equation for the combustion of Sulfur.

sulfur dioxide

oxygensulfurS O2SO2

How does this relate to burning fuels?

Sulfur is an impurity in fossil fuels so as the fuel is burned, the creation of SO2 can occur which can lead to acid rain

GCSE Core Chemistry



Can you link these pictures?Can you link these pictures?Scientists

believe that that droughts, floods & the melting polar caps are all effects of

global warming.

Weathered statues,

buildings & dying forests are the effects

of acid rain

GCSE Core Chemistry



SQUARE PYRAMIDSSQUARE PYRAMIDS

On each triangular sideOn each triangular side add information add information about each of the key issues; about each of the key issues;

Global warming, Global dimming, Acid rain Global warming, Global dimming, Acid rain & fuel from plants& fuel from plants

On the square base;On the square base;

Fuel from rubbishFuel from rubbish

GCSE Core Chemistry



Now swap your pyramids & answer Now swap your pyramids & answer these next questions. these next questions.

You will have to tell your swap You will have to tell your swap partner partner

•what they were missing (making what they were missing (making things difficult for you) & things difficult for you) &

•what was really helpfulwhat was really helpful

GCSE Core Chemistry



SUMMARY QUESTIONS

• What type of gas is carbon dioxide?

• How does it affect the earth?

• What does this effect cause?

• What human problems can particulates cause?

• What do particulates do to the earth?

• How?

• What does sulfur dioxide dissolve in to form acid rain?

• How does sulfur get released into the atmosphere?

• How can you reduce the amount of sulfur dioxide that is released?

Greenhouse Gas

It reduces the amount of heat lost from earth

Global warming

Health concerns

Causes global dimming

By reflecting sunlight away from the earth

Water

Burning fossil fuels

Remove sulfur compounds from fuels at the refinery, remove SO2 from waste gases after burning

GCSE Core Chemistry



EXAM REVIEWEXAM REVIEW6 Cattle give out methane6 Cattle give out methane

6 (a) Explain how the methane given out by cattle is affecting the earth’s 6 (a) Explain how the methane given out by cattle is affecting the earth’s

climate. (3 marks) climate. (3 marks) ???What would marks be given for??????What would marks be given for???

Because methane is a greenhouse gas it goes up and stays in the atmosphere Because methane is a greenhouse gas it goes up and stays in the atmosphere so when heat from the sun goes through and cycles around the earth as heat so when heat from the sun goes through and cycles around the earth as heat is leaving it gets trapped by the gas effectively changing the climate.is leaving it gets trapped by the gas effectively changing the climate.

Methane is a greenhouse gas, so it stays out of the earth and contributes in Methane is a greenhouse gas, so it stays out of the earth and contributes in reradiating the suns rays back into earth which then contributes to raising the reradiating the suns rays back into earth which then contributes to raising the earths temperature.earths temperature.

When methane is released, some of it travels around into the atmosphere. The When methane is released, some of it travels around into the atmosphere. The suns rays then hit the earth, but instead of bouncing back, they become suns rays then hit the earth, but instead of bouncing back, they become trapped in the atmosphere, because of the methane and other gases. The trapped in the atmosphere, because of the methane and other gases. The trapped gases cause the climate to rise.trapped gases cause the climate to rise.

-That methane is a greenhouse gas

-That greenhouse gas change weather patterns or causes global warming

-That greenhouse gases absorbs energy (or infrared light or heat or radiation) that is radiated back from the earth

-That greenhouse gases re-radiates (or reflects) some of this energy that is radiated back from earth

GCSE Core Chemistry



Plants can provide sugars toPlants can provide sugars to - -make oilsmake oils that can be used as biodiesel that can be used as biodiesel OROR--make ethanolmake ethanol (fermenting sugar using (fermenting sugar using yeast, this can then be added to petrol to yeast, this can then be added to petrol to make gasohol producing less pollution & make gasohol producing less pollution & reducing the amount of oil needed)reducing the amount of oil needed)

Fossil fuels are running out. Fossil fuels are running out. What can be done?What can be done?

GCSE Core Chemistry



So what makes a good fuel?

AFFORDABLEEASY TO

TRANSPORTEASY TO STORE

IGNITES EASILY

PRODUCES LITTLE WASTE EASY TO MAKE

GCSE Core Chemistry



Time to debateYou will be in 4 groups (red, green, yellow, blue).Each group will have a point of view about the

following statement by Gordon Brown;

Britain will be a world leader in the Britain will be a world leader in the use of rubbish as an alternative use of rubbish as an alternative

fuel sourcefuel source

GCSE Core Chemistry



Time to debateBritain will be a world leader in the use of Britain will be a world leader in the use of

rubbish as an alternative fuel sourcerubbish as an alternative fuel source

1 person from your group will prepare a 1-2 mins explanation of their groups point of view;

RED: You are resistant to change the fuel type in your carGREEN: You are a local resident to the proposed incineratorYELLOW: You are active environmentalistsBLUE: You are from the local council

GCSE Core Chemistry



GCSE Core Chemistry


should also know about some developments to overcome problems with fuelsshould also know about some developments to overcome problems with fuelsLearning Objectives: Identify and explain • That burning fuels has a negative environmental impact.• How we can reduce the pollution from burning fuels.

I will be successful in this lesson if I can:

• State what causes global warming, global dimming and acid rain (Lvl C).• List some ways of reducing pollutants released when we burn fuels (Lvl C).• Explain how acid rain is produced, and how it can be reduced (Lvl A).• Discuss the relationship between global dimming and global warming (Lvl A). •Explain methods of reducing pollutants from fuels (Lvl A).

gcse core chemistry exam tip; you must be able to link the products of burning fossil fuels with...

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