21c gcse homework
This chapter considers the laboratory and large-scale production of useful chemicals. A set of repeat measurements can be processed to calculate a range within which the true value probably lies and to give a best estimate of the value mean. Making a soluble salt by from an acid with a metal or insoluble base — oxide, hydroxide or carbonate Notes. Introduction to moles multiple choice QUIZ. The useful life of products made from iron is limited because iron corrodes. Titration type in answer QUIZ. Everyday examples of acid-alkali chemistry - examples and uses of acids and alkalis pH quoted too Notes. Counting atoms or formula units of compounds involves very large numbers, so chemists use a mole as a unit of counting. Trial in your school. HT only Be able to carry out calculations with numbers written in standard form when using the Avogadro constant. Polymer molecules have the same strong covalent bonding as simple molecular compounds, but there are more intermolecular forces between the molecules due to their length.
Testing predictions of volumes of gases produced from reactions of acids. Data is automatically recorded. General introduction to nanoscience and commonly used terms explained Revision Notes.
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Word-fill quiz "Methods of making salts". Welcome to Tassomai The scientific way to learn Tassomai is an intelligent online learning program helping students at all levels achieve outstanding results. Rate of reaction can be determined by measuring the rate at which a product is made or the rate at which a reactant is used. Be able to estimate size and scale of atoms and nanoparticles including the ideas that:. Easy multiple choice quiz on "Acids, alkalis, salts and simple chemical reactions".
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This can be problematic in industry because the reactants never completely react to make the products.
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Schools can trial Tassomai free for 5 weeks and discover the impact of this powerful tool for themselves. STUDY notes on page or enter key words or use above links. Many products that we use every day are based on the chemistry of acid reactions. Be able to evaluate factors that affect decisions on recycling with reference to products made from crude oil and metal ores.
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Moles and the molar volume of a gas, Avogadro's Law Revision Notes. Survey of properties related to uses of a wide variety of materials - metals, polymers, composites, ceramics Notes. Carrying out investigations.
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General introduction to nanoscience and commonly used terms explained Revision Notes. Be able to explain reduction and oxidation in terms of loss or gain of oxygen, identifying which species are oxidised and which are reduced. Ionic bonding and ionic compounds and their properties Revision Notes.
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