was covered by more than 3‚000 feet of ice. The average temperatures were only 5 to 9 degrees cooler than today. Global warming Earth’s Atmosphere Gases: • • • • • Nitrogen (N) Oxygen (O2) Argon (Ar) Water Vapor (H2O) Carbon Monoxide (CO2) Global warming Greenhouse Gases Effects Natural greenhouse gases in the atmosphere are the substances that trap heat and insulate Earth from temperature swings: • • • • • Water vapor (H2O) Carbon dioxide (CO2) Methane (CH4)
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combined they make up 99% of the earth’s atmosphere. Joseph Priestley’s different discoveries are used for many different things today‚ like nitrous oxide many dentists use this during procedures to create numbness or use it as an anesthesia. Carbon monoxide‚ another one of his discoveries‚ is a very poisonous gas that can kill people without them even knowing it. Sulfur dioxide is a well-known disinfectant. All of his discoveries have affected us in some way shape or form‚ some with a huge impact such
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OCR gateway Core C1 revision notes Anything written in purple is for higher tier Exam tips are in red Fossil Fuels 3 types Coal (made from dead plants that lived millions of years ago) Crude oil (made from dead sea creatures that lived millions of years ago) Natural gas (made from dead sea creatures that lived millions of years ago) Key words to learn Non-renewable- fossil fuels are said to be this as we are using them up faster than they can be made Finite- these will run out if we
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nitrogen (NOx) Oxides: These are generated when nitrogen in the air‚ high temperature and pressure conditions inside the engine to react with oxygen. NOx emissions contribute to both smog and acid rain. O Carbon (CO) Monoxide: a product of incomplete combustion‚ carbon monoxide reduces the blood’s oxygen carrying capacity and is dangerous for people with heart disease. O Carbon dioxide (CO2) emissions of carbon dioxide as its role in global warming is a growing concern as a greenhouse gas
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be present simply to add flavour. [pic] How smoking damages lungs Cigarette smoke contains many substances‚ which can damage the lungs. The actual smoke has two parts: tiny solid pieces‚ which contain tar‚ and the gas‚ which contains carbon monoxide and nitrogen oxides. Smoking takes these poisonous substances directly into your lungs. The filters in most cigarettes are of some benefit‚ but they still let most of the harmful chemicals into your lungs. The tar in cigarette smoke damages cells
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only carbon dioxide but discharge of SOx (SOx) can be suppressed to zero‚ and carbon monoxide‚ hydrocarbon‚ etc. can be pressed down in a small quantity. * Cleaner combustion Ethanol is far more clean burning and requires less oxygen to undergo complete combustion due to the oxygen atom present in each molecule hence it is far cleaner burner which doesn’t produce harmful chemicals like carbon monoxide as in petrol based cars. Disadvantage: * High Cost At present‚ as compared
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ethanol and hydrogen peroxide to know which would make a more efficient‚ clean‚ and stable combination. Compared to conventional fuels‚ ethanol contains 36% oxygen thus resulting in more complete combustion. This greatly lowers the formation of carbon monoxide by allowing it to react with oxygen present in ethanol yielding a more eco-friendly gas. Hydrogen peroxide is also added to ethanol since it contributes to the addition of oxygen for complete combustion. The proponents made use of iron stands and
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THE DEPLETION OF FOSSIL FUELS By Zoe Noonan Introduction As the world is becoming more advanced in technology‚ more energy is being used to keep up with the changing requirements. At the current rate at which energy is being used‚ the world will shortly come to an end of fossil fuels- the world’s primary energy resource. Abstract This research paper outlines the problems being faced by the shortage of fossil fuels‚ the effects they are having on the environment and the possible substitutes
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for use as a cooling agent (refrigerant) in refrigerators because it has a low boiling point and it very volatile. 5. In the Ostwald process‚ ammonia is converted into nitric acid by the following steps: a) Ammonia is oxidized to nitrogen monoxide gas in the
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is to create a solar powered machine which decreases air pollution. But also there are some ways that the people of the United States can help stop air pollution. Air pollution affects the health of people in a major way. The presence of carbon monoxide in the air we breathe causes headache nausea and suffocation. Tuberculosis‚ bronchitis and asthma are common in our country due to poor air quality. Dust in air causes asthma and allergies. In winter days fogs containing particulate matter causes
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