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Energetics - Edexcel IGCSE Chemistry
Complete lessons and workbook
Content
Know that chemical reactions in which heat energy is given out are described as exothermic and those in which heat energy is taken in are endothermic
Describe simple calorimetry experiments for reactions such as
combustion, displacement, dissolving and neutralisation
Calculate the heat energy from a measured temperature change
using the expression Q = mcΔT
Calculate molar enthalpy change (ΔH ) from heat energy change Q
Draw and explain energy level diagrams to represent
exothermic and endothermic reactions
Know that bond-breaking is an endothermic process and that
bond-making is exothermic
Use bond energies to calculate the enthalpy change during a
chemical reaction
Weimar and Nazi Germany Complete Revision Booklet -CIE IGCSE History
This 20000+ word count document contains all possible 4, 6, and 10 mark questions and answers for the Weimar and Nazi Germany depth study. Each question is followed by key points, and also relevant detailed statistics.
Acids and Bases - Edexcel IGCSE Chemistry
Complete lessons and workbook
Content
Describe the use of litmus, phenolphthalein and methyl orange
to distinguish between acidic & alkaline solutions
Understand how to use the pH scale, from 0–14, to classify
solutions as strongly acidic (0-3), weakly acidic (4-6), neutral (7),
weakly alkaline (8-10) and strongly alkaline (11-14)
Describe the use of Universal Indicator to measure the
approximate pH value of an aqueous solution
Know that acids in aqueous solution are a source of hydrogen
ions and alkalis in an aqueous solution are sources of hydroxide
ions
Know that metal oxides, metal hydroxides and ammonia can be
classified as bases and that alkalis are bases that are soluble in
water
Know that bases can neutralise acids
Understand acids and bases in terms of proton transfer and that
an acid is a proton donor and a base is a proton acceptor
Understand how to use acid-base character of oxides to classify
elements as metals or non-metals
Describe the combustion of elements in oxygen, including
magnesium, hydrogen and sulfur
Describe the reactions of hydrochloric, sulfuric and nitric acids
with:
metals (but not with nitric acid)
bases
metal carbonates
Describe an experiment to prepare a pure, dry sample of a
soluble salt starting from an insoluble reactant
Describe an experiment to prepare a pure, dry sample of a
soluble salt starting from an acid and an alkali
Describe an experiment to prepare a pure, dry sample of an
insoluble salt starting from two soluble reactants
Alcohols - Edexcel IGCSE Chemistry
Complete Lessons and workbook
Content
Know that alcohols contain the functional group OH
Understand how to draw structural and displayed formulae for methanol, ethanol, propanol (propan-1-ol only) and butanol (butan-1-ol only), and name each compound (the names propanol and butanol are acceptable)
Know that ethanol can be manufactured by:
reacting ethene with steam in the presence of a phosphoric
acid catalyst at a temperature of about 300 oC and a pressure
of about 60–70 atm
2.the fermentation of glucose, in the absence of air, at an
optimum temperature of about 30 oC and using the enzymes in
yeast oxide
Know that ethanol can be oxidised by:
burning in air or oxygen (complete combustion)
reaction with oxygen in the air to form ethanoic acid (microbial oxidation)
heating with potassium dichromate(VI) in dilute sulfuric acid to form ethanoic acid
Know that carboxylic acids contain the functional group COOH
Understand how to draw structural and displayed formulae for unbranched chain carboxylic acids with up to four carbon atoms in the molecule, and name each compound
Describe the reactions of aqueous solutions of carboxylic acids with metals and metal carbonates
Know that vinegar is an aqueous solution containing ethanoic
acid
Know that esters contain the functional group COOR
Know that ethyl ethanoate is the ester produced when ethanol
and ethanoic acid react in the presence of an acid catalyst
Rates of Reaction - Edexcel IGCSE Chemistry
Content
Describing experiments to investigate the effects of changes in
surface area of a solid, concentration of solutions, temperature
and the use of a catalyst on the rate of a reaction
Describing the effects of changes in surface area of a solid,
concentration of solutions, pressure of gases, temperature and
the use of a catalyst on the rate of a reaction
Explaining the effects of changes in surface area of a solid,
concentration of solutions, pressure of gases and temperature
on the rate of a reaction in terms of particle collision theory
Knowing that a catalyst is a substance that increases the rate of a
reaction, but is chemically unchanged at the end of the reaction
Knowing that a catalyst works by providing an alternative pathway
with lower activation energy
Skills
Drawing and explaining reaction profile diagrams showing ΔH and
activation energy
Edexcel IGCSE Chemistry - Redox and Reactivity
Topics
Understanding the following in terms of gain or loss of oxygen and loss or gain of electrons:
• Oxidation
• Reduction
• Redox
• Oxidising agent
• Reducing agent
Knowing the approximate percentages by volume of the four most abundant gases in dry air
Knowing the conditions under which iron rusts
Understanding how the rusting of iron may be prevented by barrier methods, galvanizing and sacrificial protection
Understanding how to determine the percentage by volume of oxygen in air using experiments involving the reactions of metals (e.g. iron) and non-metals (e.g. phosphorus)
Understanding how metals can be arranged in a reactivity series based on their reactions with:
• Water
• Dilute hydrochloric or sulfuric acid
Understanding how metals can be arranged in a reactivity series based on their displacement reactions between:
• Metals and metal oxides
• Metals and aqueous solutions of metal salts
Knowing the order of reactivity of these metals: potassium, sodium, lithium, calcium, magnesium, aluminium, zinc, iron, copper, silver, gold
Edexcel IGCSE Biology - Digestion (3.3)
Topics
content
Describing the structure and function of the human alimentary canal, including the mouth, esophagus, stomach, small intestine (duodenum and ileum), large intestine (colon and
rectum) and pancreas
Understanding how food is moved through the gut by peristalsis
Understanding the role of digestive enzymes including the digestion of starch to glucose by amylase and maltase, the digestion of proteins to amino acids by proteases and the digestion of lipids to fatty acids and glycerol by lipases.
Understanding that bile is produced by the liver and stored in the gall bladder.
Understanding the role of bile in neutralising stomach acid and emulsifying lipids.
Understanding how the small intestine is adapted for absorption, including the structure of a villus
Understanding the role of enzymes as biological catalysts in metabolic reactions
Understanding how temperature changes can affect enzyme function, including changes to the shape of active site
Understanding how enzyme function can be affected by changes in pH altering the active site
Practical Skills
Investigating how enzyme activity can be affected by changes in temperature
Investigating how enzyme activity can be affected by changes in pH
Alkenes and Alkanes- Edexcel IGCSE Chemistry
Topics
Understanding how to represent organic molecules using empirical, molecular, structural, displayed and general formulae
Knowing what is meant by the terms homologous series, functional group and isomerism
Understanding how to name compounds relevant to this specification for compounds containing up to six carbon atoms
Knowing that alkanes have the general formula CnH2n+2
Explaining why alkanes are classified as saturated hydrocarbons
Knowing that alkenes contain the functional group >C=C<
Knowing the general formula for alkenes CnH2n
Explaining why alkenes are classified as unsaturated hydrocarbons
Understanding how to write possible structural and displayed formulae of an organic molecule given its molecular formula
Understanding how to draw the structural and displayed formulae for alkanes with up to five carbon atoms in a molecule, and to name the unbranched isomers
Describing the reactions of alkanes with halogens in the presence of UV light and classify them as substitution reactions (limited to mono-substitution)
Understanding how to draw structural and displayed formulae for alkenes with up to four carbon atoms and name unbranched- chain isomers cis/trans or E/Z is not required
Describing the reactions of alkenes with bromine to produce dibromoalkanes
Describing how bromine water can be used to distinguish between an alkane and an alkene
International Relations - IGCSE History CIE
This 20000+ word count document contains all possible 4, 6, and 10 mark questions and answers for the international relations topic(eg. road to war, treaty of versailes and the league of nations)… Each question is followed by key points, and also relevant detailed statistics.
Electrolysis - Edexcel IGCSE Chemistry
Complete lesson and workbook
Content
Understand why covalent compounds do not conduct
electricity
Understand why ionic compounds conduct electricity only when molten or in solution
Know that anion and cation are terms used to refer to negative and positive ions respectively
Describe experiments to investigate electrolysis, using inert electrodes, of molten compounds (including lead(II) bromide) and aqueous solutions (including sodium chloride, dilute sulfuric acid and copper(II) sulphate) and to predict the
products electricity
Write ionic half-equations representing the reactions at the electrodes during electrolysis and understand why these reactions are classified as oxidation or reduction
Know that most metals are extracted from ores found in the Earth’s crust and that unreactive metals are often found as the uncombined element carbon
Explain how the method of extraction of a metal is related to its position in the reactivity series, illustrated by carbon extraction for iron and electrolysis for aluminium
Be able to comment on a metal extraction process, given appropriate information detailed knowledge of the processes used in the extraction of a specific metal is not required
Introductory Ideas - Edexcel IGCSE Chemistry
Topics
Understanding how to classify a substance as an element, a compound or a mixture
Knowing what is meant by the terms atom and molecule and understand that not all substances exist as molecules
Knowing the names and symbols of common elements
Knowing that the Periodic Table is an arrangement of elements in groups and periods
Understanding what is meant by a chemical formula, including use of brackets (not water of crystallisation at this stage)
Naming simple binary compounds (including use of mono, di, tri etc (but not oxidation state at this stage)
Understanding the use of word equations to describe chemical reactions
Understanding what is meant by state symbols s, l, g and aq
Describing a test for the presence of water using of anhydrous copper(II) sulfate
Describing a physical test to show whether a sample of water is pure
Knowing that elements can be classified as metals and non-metals according to their position in the Periodic Table and their electrical conductivity
Appreciating that the name of some chemical compounds do not follow a system and know the name and formula of water, ammonia, methane, hydrochloric, sulphuric and nitric acids
Recognising and name common atom groupings, restricted to hydroxide, ammonium, carbonate, sulphate and nitrate (no information about ions or charges at this stage)
Understanding what is meant by a balanced chemical equation and be able to write balanced equations given sufficient information about the formulae of reactants and products
Describing tests for these gases:
• hydrogen
• oxygen
• carbon dioxide
• ammonia
• chlorine
Edexcel IGCSE Biology - Living Organisms and Cells (3.1 )
Topics
Understanding that living organisms share the following characteristics:
they require nutrition
they respire
they excrete their waste
they respond to their surroundings
they move
they control their internal conditions
they reproduce
they grow and develop
Describing the levels of organisation within organisms: organelles, cells, tissues, organs and systems
Describing cell structures, including the nucleus, cytoplasm, cell membrane, cell wall, mitochondria, chloroplast, ribosomes and vacuole
Describing the functions of the nucleus, cytoplasm, cell membrane, cell wall, mitochondria, chloroplasts, ribosomes and vacuole
Knowing the similarities and differences in the structure of plant and animal cells
Describint the common features shown by eukaryotic organisms: plants, animals, fungi and protoctists
Plants: these are multicellular organisms; their cells contain chloroplasts and are able to
carry out photosynthesis; their cells have cellulose cell walls; they store carbohydrates as
starch or sucrose. Examples include flowering plants, such as a cereal (for example,maize), and a herbaceous legume (for example, peas or beans).
Animals: these are multicellular organisms; their cells do not contain chloroplasts and are not able to carry out photosynthesis; they have no cell walls; they usually have nervous co-ordination and are able to move from one place to another; they often store carbohydrate as glycogen. Examples include mammals (for example, humans) and insects (for example, housefly and mosquito).
Fungi: these are organisms that are not able to carry out photosynthesis; their body is usually organised into a mycelium made from threadlike structures called hyphae, which contain many nuclei; some examples are single-celled; their cells have walls made of chitin; they feed by extracellular secretion of digestive enzymes onto food material and absorption of the organic products; this is known as saprotrophic nutrition; they may store carbohydrate as glycogen. Examples include Mucor, which has the typical fungal hyphal structure, and yeast, which is single-celled.
Protoctists: these are microscopic single-celled organisms. Some, like Amoeba, that live in pond water, have features like an animal cell, while others, like Chlorella, have chloroplasts and are more like plants. A pathogenic example is Plasmodium, responsible for causing
malaria.
Islam Revision Booklet and Quotations Sheet for AQA Religious Studies
Contains all necessary quotes and explanations needed to answer all aspects of the Islam Topic in AQA GCSE religious studies
Gas Exchange in Humans- Edexcel IGCSE Biology
Topics
Describing the structure of the thorax, including the ribs, intercostal muscles, diaphragm, trachea, bronchi, bronchioles, alveoli and pleural membranes
Understanding the role of the intercostal muscles and the diaphragm in ventilation
Explaining how alveoli are adapted for gas exchange by diffusion between air in the lungs and blood in capillaries.
Understanding the role of diffusion in gas exchange.
Understanding the biological consequences of smoking in relation to the lungs and the circulatory system, including coronary heart disease.
Practical tasks
Investigating breathing in humans, including the release of carbon dioxide and the effect of exercise
Edexcel IGCSE Biology -Nutrition (3.2)
Topics
Content
Understanding that a balanced diet should include appropriate proportions of carbohydrate, protein, lipid, vitamins, minerals, water and dietary fibre
Identify the sources and describe the functions of carbohydrate, protein, lipid (fats and oils), vitamins A, C and D, the mineral ions calcium and iron, water and dietary fibre as components of the diet
Understanding how energy requirements vary with activity levels, age and pregnancy
Identifying the chemical elements present in carbohydrates, proteins and lipids (fats and oils)
Describing the structure of carbohydrates, proteins and lipids as large molecules made up from smaller basic units:
starch and glycogen from simple sugars
protein from amino acids
lipid from fatty acids and glycerol
Pratical Skills
Investigate food samples for the presence of glucose, starch, protein and fat
2.Investigate the energy content in a food sample
Gas Exchange (3.4) - Edexcel IGCSE Biology
Topics
Understanding how the process of respiration produces ATP in living organisms
Knowing that ATP provides energy for cells
Describing the differences between aerobic and anaerobic respiration
Knowing the word equation and the balanced chemical symbol equation for aerobic respiration in living organisms.
Knowing the word equation for anaerobic respiration in plants and in animals.
Practical Skills
Investigating the evolution of carbon dioxide and heat from respiring seeds or other suitable living organisms
Ecology -Edexcel IGCSE Biology
Topics
Understanding the terms: population, community, habitat and ecosystem
Understanding how abiotic and biotic factors affect the population size and distribution of organisms
Understanding the term biodiversity
Practical Tasks
Investigating the population size of an organism in two different areas using quadrats
Investigating the distribution of organisms in their habitats and measure biodiversityusing quadrats
Understanding the names given to different trophic levels to include:
producers, primary, secondary, tertiary consumers, and decomposers
Understanding the concepts of:
food chains,
food webs,
pyramids of number,
pyramids of biomass and
pyramids of energy transfer.
Understanding the transfer of substances and of energy along a food chain
Understanding why only about 10% of energy is transferred from one trophic level to the next
Nerves and Eyes(4.4) - Edexcel IGCSE Biology
Topics
Understanding how organisms are able to respond to changes in their environment
Understanding that a coordinated response requires a stimulus, a receptor and an effector
Describing how nervous and hormonal communication control responses and understand the differences between the two systems
Understanding that the central nervous system consists of the brain and spinal cord and is linked to sense organs by nerves
Understanding that stimulation of receptors in the sense organs sends electrical impulses along nerves into and out of the central nervous system, resulting in rapid responses
Understanding the role of neurotransmitters at synapses
Describing the structure and functioning of a simple reflex arc illustrated by the withdrawal of a finger from a hot object Describe the structure and function of the eye as a receptor
Understanding the function of the eye in focusing near and distant objects, and in responding to changes in light intensity