Physical sciences grade 12 industrial fertilisers. Fertilisers 2019-02-03

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physical sciences grade 12 industrial fertilisers

Polyesters are stretched out into fibres and can then be made into fabric and articles of clothing. The compound is an alkene and will have the sufRx -ene. As the chain grows in size, it begins to twist, curl and fold upon itself. The greater the strength of the intermolecular forces, the greater will be the tensile strength and melting point of the polymer. Conclusions: The copper acts as a catalyst during the reaction. Give the structural formula of the monomers that make up the polypeptide. A general discussion of the section can follow.

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Fertilisers Grade 12

physical sciences grade 12 industrial fertilisers

The alkenes and alkynes are examples of unsaturated molecules. Starch is a natural polymer. I went through all the questions and got clarity in all the concepts that may possibly be tested in the final exam. Each bond is represented by a line. Why is there a decrease in mass during the reaction? In the example below, an atom of hydrogen and chlorine are eliminated from the original compound to form an unsaturated halo-alkene. The equilibrium position will shift to the right.

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physical sciences grade 12 industrial fertilisers

Catalysts decrease the activation energy required for a reaction to proceed shown by the smaller 'hump' on the energy diagram in Figure 3. Explain why this is the case. A biological macromolecule is a polymer that occurs naturally in living organisms. Examples include bakelite, vulcanised rubber, melanine used to make furniture , and many glues. Plastic packaging provides excellent protection for the product, it is cheap to manufacture and seems to last forever. The alkenes undergo addition reactions because they are unsaturated. Prepare a solution of dilute hydrochloric acid in one of the beakers by diluting 1 part concentrated acid with 10 parts water.

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physical sciences grade 12 industrial fertilisers

Because of this, long chain structures can form. As the vapour mixture moves up the column and cools, the different components called fractions condense as the temperature drops below the various boiling point temperatures. The more carbon atoms there are in an alkane, the greater the surface area and therefore the higher the boiling point. Is the reaction an addition or condensation reaction? Give the name of the organic compound in the reactants. Organic compounds can be grouped according to their functional group. Oxidation reactions When alkanes are burnt in air, they react with the oxygen in air and heat is produced. What is the name of the monomer? A hydrocarbon is unsaturated if it does not contain the maximum number of hydrogen atoms for that molecule.

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The Fertiliser Industry

physical sciences grade 12 industrial fertilisers

In this case, the reaction that produces heat energy will be favoured, in other words, the exothermic reaction. A chemical reaction takes place and ethyl methanoate is formed. The forward reaction will therefore be favoured. Ensure that two learners sitting next to each other do not receive the same topic. Nylon is very strong and resistant, and is used in fishing line, shoes, toothbrush bristles, guitar strings and machine parts to name just a few. Give the balanced equation for the combustion of this compound in excess oxygen. This means that they are unsaturated and are more reactive than the alkanes.

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Fertilisers Grade 12

physical sciences grade 12 industrial fertilisers

An amino acid is an organic molecule that contains a carboxyl and an amino group, as well as a carbon side chain. The carbon side chain varies from one amino acid to the next, and is sometimes simply represented by the letter 'R' in a molecule's structural formula. Write an unbalanced equation for the chemical reaction which takes place when petrol CgHis burns in excess oxygen. In the other, the products react to form reactants again. Draw a graph to show the relationship between molecular mass on the x-axis and boiling point on the y-axis 1.

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physical sciences grade 12 industrial fertilisers

Which of the compounds, hexane or hexene, is more reactive? The effects of drinking too much alcohol can be reduced by drinking lots of water. More often, we eat complex carbohydrates that our bodies have to break down into individual glucose molecules before they can be used in cellular respiration. Increasing the pressure favours the side of the equilibrium with the least number of gas molecules. It has the highest nitrogen content 46,4% of all solid nitrogen-containing fertilisers that are commonly used, and is produced by the reaction of ammonia with carbon dioxide. Since iron sulfide looks very different from either of its reactants, this is easy to do.

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Reading : Physical Sciences Grade 12 Industrial Fertilisers

physical sciences grade 12 industrial fertilisers

The suffix will therefore become 1,2-diol. The compound is an alkane and will have the sufRx -ane. This oxidation also provides energy to maintain the reaction. The reaction shown below is exothermic shown by the negative value for A H. Coal can also be used to produce syngas in a similar way to natural gas. It also forms mostly covalent bonds with the atoms that it bonds to, meaning that most organic molecules are non-polar.

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