Bbc bitesize quantitative chemistry

No matter what Chemistry specification you're studying, Seneca's revision courses contain everything you need to know for your GCSE exam. Seneca covers foundation and higher tier across Double Award, Co-ordinated Sciences, Combined Sciences and your straight run-of-the-mill Chemistry.

Calculations in chemistry - AQA. Relative formula masses can be calculated and used in conservation of mass calculations. Calculations can be carried out to find out concentrations of solution and uncertainties in measurements. Calculations in chemistry - Higher - AQA. The mole is the unit for amount of substance.

Bbc bitesize quantitative chemistry

Magic for Learning and Revision. Quantitative chemistry is all about calculations using the mole as a unit. In maths, you expect to be doing calculations but in chemistry it can come as a bit of a shock to the system! Many students panic at the mention of carrying out chemical calculations but, with a little understanding and knowledge of certain ideas and a few techniques, they can become a lot less worrying. Calculations are a good way of picking up marks in the GCSE. Even when you don't get the answer right, you will always get credit for your working out - so always show how you arrived at your answer. The key idea that lies behind quantitative chemistry is the mole. In the same way that you use the word a dozen to mean twelve of something and a couple to mean two of something, the mole simply means 6 x 10 23 particles of matter. Those particles can be atoms, ions or molecules. This is extremely useful since particles of matter always combine in predictable and definite proportions e. Despite being huge, it is easy to count out this number of particles as it is based on atomic masses; if you weigh out the formula mass of a substance, you have one mole of particles.

Some toothpastes contain sodium fluoride. You might realise that you actually already know a lot of the chemistry material. Calculate the empirical formula of this compound.

Everything you need for GCSE Chemistry revision, from past papers and revision pages, to revision cards and exam questions by topic. Gold Standard Education. Learn an entire GCSE course for maths, English and science on the most comprehensive online learning platform. Each paper has been designed by Chemistry experts, tutors and examiners, to ensure they are as accurate as possible in replicating the real exams. The profit from every pack is reinvested into making free content on MME, which benefits millions of learners across the country. Each paper has been designed by Science experts, tutors and examiners, to ensure they are as accurate as possible in replicating the real exams.

Atomic structure and the periodic table. Bonding, structure and properties. Science exam techniques. GCSE Chemistry: exam-style questions. Topics include the periodic table, equations and more. GCSE Chemistry: quick-fire questions. Revise topics such as the periodic table and equations. Atoms, elements and compounds - AQA. Chemists use symbols and formulae to represent elements and compounds.

Bbc bitesize quantitative chemistry

Maths questions often start with the command word calculate. You need to use numbers given in the question to work out the answer. Listen to the full series on BBC Sounds. Brush up on the maths you need for your exam - percentages, averages and converting units. Maths questions might ask you to plot or complete a graph or table. When you draw a graph, make sure you:. You may be given a grid with axes labelled and scales already given. Sometimes you may be given an empty grid for you to supply your own axes. When you do this:.

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BBC: Science and Environment. Jobs that use Science. And can you find your way around the periodic table? Seneca courses aren't sufficient for you? Giant Structures. Combined Science Exam practice. Reversible Reactions and Equilibria. Hydrocarbon Compounds. The Rate and Extent of Chemical Changes. Standard Form.

Calculations in chemistry - AQA. Relative formula masses can be calculated and used in conservation of mass calculations. Calculations can be carried out to find out concentrations of solution and uncertainties in measurements.

Gas Calculations. Errors and Uncertainty. Rearranging Equations. Reactions of Acids. Limiting Reactants. Crude Oil. Statistics Calculations. To comply with the new e-Privacy directive, we need to ask for your consent - I agree - No thanks - Find out more. The key idea that lies behind quantitative chemistry is the mole. Endothermic and Exothermic Reactions. Flavia Belham.