absorb carbon dioxide from air and undergo photosynthesis reaction which turns it into glucose and produces oxygen: 6CO2 6H2O C6H12O6 6O2 The carbon is now stored in plantsas glucose. This is perhaps because of its abundance and numerous uses. This results in the formation of sulphuric acid (H2SO4). Metals usually used as protectors in this method are zinc and magnesium since they are higher than iron in the reactivity series. This method is used in food cans and car bumpers. Its the guarantee of PapaCambridge that you will find the latest past papers and other resources of Chemistry 9701 before any other website. Past papers of Chemistry 0620 are available from 2002 up to the latest session. Some of the heat energy reflects back to the space, some however are trapped inside the Earth. Water is then delivered to homes. 17/1/2017 : October november 2017 igcse Chemistry.
This is caused by some gases and it is called the greenhouse effect. Past papers of Chemistry edpm past papers 9701 are available from 2002 up to the latest session. Water Purification, municipal and industrial 2NO O2 2NO2 The problem associated with nitrogen dioxide is similar to that of sulphur dioxide. The main categories of water use are agricultural. Curriculum Standards documents, download this page as PDF, chlorine gas is bubbled through the water to kill all bacteria living in the water making the water sterile. Compounds of lead are waste products of fuel burning in cars. Standards, reacting with limestone from buildings and sculptures corroding. If you crystallise the solution of cobalt chloride you will obtain pink hydrated cobalt chloride crystals see the picture on the right.
Demonstrate understanding of aspects of carbon chemistry.Credits: Assessment: Level: Belongs to: 4 External.
In one way or another, the formula of rust is Fe2O3. The other greenhouse gas is formed by animals. The main source of carbon monoxide is factories which burn carboncontaining fossil fuels since CO is one of the products of the incomplete combustion of fossil fuels. If the plant chemistry is eaten by animals or humans.
The gas can also be produced by a reaction between an acid and a carbonate, like that of the corrosion limestone.These substances contain the carbon which was made and stored by the plants and they are then taken by power stations which put them to use.Green House Gases: The sun sends energy to the earth in two forms, light and heat.
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