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Chemistry (Single Science) - CCEA

Easy-to-understand homework and revision materials for your GCSE Chemistry (Single Science) CCEA '9-1' studies and exams

Part of Chemistry (Single Science)

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Exam practice

Quizzes

  • QUIZ: Acids, alkalis and salts (1)

    This interactive quiz is for GCSE Chemistry (single science) students studying acids, alkalis and salts. Test your knowledge on neutralisation, reactions with acids and solutions.

  • QUIZ: Acids, alkalis and salts (2)

    This interactive quiz is for GCSE Chemistry (single science) students studying acids, alkalis and salts. Test your knowledge of indicators, reactions and chemical equations.

Structures, trends, chemical reactions, quantitative chemistry and analysis

  • Atomic structure - (CCEA)

    Scientists’ ideas about atoms have changed over time. Today, they agree that atoms have a positively-charged nucleus made of protons and neutrons, and negatively-charged electrons that orbit the nucleus in shells.

  • Bonding - (CCEA)

    Atoms and ions bond with each other in three main ways – ionic bonds, covalent bonds and metallic bonds. Different types of bonds form different types of structures – lattices and molecules.

  • Structures - (CCEA)

    Ionic bonding holds ions together in a giant lattice. Covalent bonds create simple molecules or giant covalent structures. Different types of bonding give a substance different properties.

  • Nanoparticles - (CCEA)

    Nanoparticles have large surface to volume ratios. This gives them interesting properties.

  • Symbols, formulae and equations - (CCEA)

    Symbols, formulae and equations help chemists to explain chemical reactions in detail.

  • The periodic table - (CCEA)

    The periodic table helps to categorise the known elements and make predictions about ones that we haven’t yet discovered.

  • Quantitative chemistry - (CCEA)

    Chemists use relative atomic masses and relative formula masses to carry out mole calculations.

  • Acids, bases and salts - (CCEA)

    Many chemicals are acidic, neutral or alkaline. We can distinguish one from another using indicators. Acidity and alkalinity are measured on the pH scale. A salt is formed when an acid is neutralised by an alkali.

  • Chemical analysis - (CCEA)

    Most elements are rarely found in their pure form. They are found chemically combined with other elements in compounds. Compounds are often found mixed with other compounds. Mixtures may be separated and analysed.

  • Solubility - (CCEA)

    Solubility is a measurement of the maximum mass of a substance which will dissolve in 100 g of water at a particular temperature. The solubility of solids and gases in water varies with changes in temperature.

Further chemical reactions, rates and equilibrium, calculations and organic chemistry

  • Metals and reactivity series - (CCEA)

    The reactivity series ranks metals by how readily they react. More reactive metals displace less reactive metals from their compounds and react with water.

  • Redox, rusting and iron - (CCEA)

    Oxidation is loss of electrons, gain of oxygen or loss of hydrogen. Reduction is gain of electrons, loss of oxygen or gain or hydrogen. Rusting is an example of oxidation.

  • Rates of reaction - (CCEA)

    The rate of reaction increases when reactant particles successfully collide more frequently. Temperature, reactant concentration, size of solid reactant particles (surface area) and catalysts can all affect the reaction rate.

  • Reversible reactions - (CCEA)

    Some chemical reactions are reversible, and may reverse even as they react. This can create a state of dynamic equilibrium.

  • Organic chemistry - (CCEA)

    An organic chemical contains the element carbon. There are four different homologous series of organic compounds discussed here: alkanes, alkenes, alcohols and carboxylic acids.

  • Quantitative chemistry - (CCEA)

    We looked at calculating and using moles for solids using mass in unit 1.7. Here we are using moles of a solute dissolved in a solution and moles of a gas to carry out calculations.

  • Electrochemistry - (CCEA)

    Electrolysis involves using electricity to break down electrolytes. The products of electrolysis can be predicted for a given electrolyte.

  • Energy changes in chemistry - (CCEA)

    When a chemical reaction occurs, energy is transferred to, or from, the surroundings. An exothermic reaction releases heat to the surroundings and an endothermic reaction absorbs heat from the surroundings.

  • Gas chemistry - (CCEA)

    The Earth atmosphere is a mixture of gaseous elements and compounds. We can prepare samples of common gases such as hydrogen, oxygen and carbon dioxide in the laboratory and examine their properties and reactions.

Prescribed practicals

Practical skills

  • Practical skills - (CCEA)

    Scientific investigations have several stages - planning, collecting data, analysing data and evaluation. It is important to understand how to carry out each stage of the investigation.

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