Questions: OCR Gateway GCSE Chemistry A (J248) and Combined Science A (J250) chemistry mock papers
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About these mock papers
- What alpha scattering showedChoose, 1 mark, Plus
- Which equation is balancedChoose, 1 mark, Plus
- Reading a chromatogramChoose, 1 mark, Plus
- Which dyes are in a mixtureChoose, 1 mark, Plus
- Element or compoundChoose, 1 mark, Plus
- Electronic structureChoose, 1 mark, Plus
- Counting atoms in a formulaCalculate, 1 mark, Plus
- Making crystals from a solutionChoose, 1 mark, Plus
- Which halogen displacement happensChoose, 1 mark, Plus
- Products of a halogen displacementChoose, 1 mark, Plus
- Which liquid distils firstChoose, 1 mark, Plus
- How many elements in a compoundCalculate, 1 mark, Plus
- Group 1 trendChoose, 1 mark, Plus
- Group 7 trendChoose, 1 mark, Plus
- Group and period from electronic structureCalculate, 1 mark, Plus
- Electrons in an ionCalculate, 1 mark, Plus
- What isotopes have in commonChoose, 1 mark, Plus
- Mendeleev's tableChoose, 1 mark, Plus
- Metal or non-metalChoose, 1 mark, Plus
- Choosing a separation methodChoose, 1 mark, Plus
- Spotting a mixtureChoose, 1 mark, Plus
- The order of atomic modelsChoose, 1 mark, Plus
- Neutrons in an isotopeCalculate, 1 mark, Plus
- Why noble gases are unreactiveChoose, 1 mark, Plus
- Electrons in the outer shellCalculate, 1 mark, Plus
- Protons, neutrons and electronsChoose, 1 mark, Plus
- Finding an element from its group and periodChoose, 1 mark, Plus
- Atom sizes in standard formCalculate, 1 mark, Plus
- Predicting a property from a trendEstimate, 1 mark, Plus
- Products of a reactionChoose, 1 mark, Plus
- Balancing an equationComplete, 2 marks, Plus
- Mass number from protons and neutronsCalculate, 2 marks, Plus
- How much bigger is the atom than its nucleusCalculate, 2 marks, Plus
- Protons, neutrons and electrons from a symbolComplete, 2 marks, Plus
- Relative atomic mass from two isotopesCalculate, 2 marks, Plus
- Relative atomic mass from three isotopesCalculate, 2 marks, Plus
- Rf value from a chromatogramCalculate, 2 marks, Plus
- Distance from an Rf valueCalculate, 2 marks, Plus
- Ionic, covalent or metallicChoose, 1 mark, Plus
- Forms of carbonChoose, 1 mark, Plus
- Explaining the properties of carbon structuresChoose, 1 mark, Plus
- Diamond or graphiteChoose, 1 mark, Plus
- Dot and cross diagram of an ionic compoundChoose, 1 mark, Plus
- The formula of an ionic compoundChoose, 1 mark, Plus
- Which substances are giant covalentChoose, 1 mark, Plus
- What is overcome on melting or boilingChoose, 1 mark, Plus
- Electronic structure of an ionChoose, 1 mark, Plus
- Group number from an ion chargeChoose, 1 mark, Plus
- The structure of an ionic compoundChoose, 1 mark, Plus
- Why pure metals bend and alloys do notChoose, 1 mark, Plus
- Why metals conductChoose, 1 mark, Plus
- Describing metallic bondingChoose, 1 mark, Plus
- Models of molecules and their limitsChoose, 1 mark, Plus
- Double and triple covalent bondsChoose, 1 mark, Plus
- Why simple molecules do not conductChoose, 1 mark, Plus
- Why polymers are solidsChoose, 1 mark, Plus
- State at a given temperatureChoose, 1 mark, Plus
- Counting the layers in a graphite flakeEstimate, 2 marks, Plus
- The ion an element formsGive, 2 marks, Plus
- When an ionic compound conductsChoose, 2 marks, Plus
- Temperature range of the liquid stateCalculate, 2 marks, Plus
- Repeat units in a polymer chainCalculate, 2 marks, Plus
- Shared pairs and electrons in a moleculeGive, 2 marks, Plus
- Why alloys are harderExplain, 3 marks, Plus
- Why ionic compounds conduct only when molten or dissolvedExplain, 3 marks, Plus
- Electrons transferred in forming a compoundCalculate, 3 marks, Plus
- Numbers of each ion in a formulaComplete, 3 marks, Plus
- Why ionic compounds have high melting pointsExplain, 3 marks, Plus
- Why simple molecular substances have low boiling pointsExplain, 3 marks, Plus
- Ions and delocalised electrons in a metalCalculate, 3 marks, Plus
- Molecule size and boiling pointCalculate, 3 marks, Plus
- Structure from property dataChoose, 3 marks, Plus
- Composition of an alloyCalculate, 4 marks, Plus
- Gold in a carat alloyCalculate, 4 marks, Plus
- Melting points of giant covalent structuresExplain, 4 marks, Plus
- Using melting and boiling point dataChoose, 4 marks, Plus
- The mass of one atom or moleculeCalculate, 2 marks, Plus, Higher tier
- Choosing the equation that fits the massesChoose, 2 marks, Plus, Higher tier
- Mass of solute from a concentration in g/dm³Calculate, 2 marks, Plus
- Moles from the ratio in an equationCalculate, 2 marks, Plus, Higher tier
- Relative formula mass, brackets includedCalculate, 2 marks, Plus
- Number of particles with the Avogadro constantCalculate, 3 marks, Plus, Higher tier
- Counting atoms inside moleculesCalculate, 3 marks, Plus, Higher tier
- Balancing an equation from reacting massesDetermine, 3 marks, Plus, Higher tier
- Empirical formula from percentagesDetermine, 3 marks, Plus, Higher tier
- Concentration in g/dm³Calculate, 3 marks, Plus
- Volume of solution from a mass and a concentrationCalculate, 3 marks, Plus
- Mass of an element in a mass of compoundCalculate, 3 marks, Plus
- Mass gained when a metal reacts with oxygenCalculate, 3 marks, Plus
- Mass lost when a gas escapesExplain, 3 marks, Plus
- Mass from molesCalculate, 3 marks, Plus, Higher tier
- Moles from massCalculate, 3 marks, Plus, Higher tier
- Molecular formula from the empirical formulaDetermine, 3 marks, Plus, Higher tier
- Finding an unknown Ar from an MrCalculate, 3 marks, Plus
- Mr from mass and moles, then identify the gasCalculate, 3 marks, Plus, Higher tier
- Mr of a hydrated saltCalculate, 3 marks, Plus
- Percentage by mass of an elementCalculate, 3 marks, Plus
- Percentage of water in a hydrateCalculate, 3 marks, Plus
- Empirical formula from massesDetermine, 4 marks, Plus, Higher tier
- Total Mr on each side of an equationComplete, 4 marks, Plus
- Reacting masses from a balanced equationCalculate, 4 marks, Plus, Higher tier
- Extracting aluminiumChoose, 1 mark, Plus
- Concentrated or dilute, strong or weakChoose, 1 mark, Plus, Higher tier
- Products of a metal displacementChoose, 1 mark, Plus
- Will one metal displace anotherChoose, 1 mark, Plus
- Ions, electrodes and electrolytesChoose, 1 mark, Plus
- What is left in the solutionChoose, 1 mark, Plus
- Which solution gives these productsChoose, 1 mark, Plus
- How a metal is extractedChoose, 1 mark, Plus
- Half equations at the electrodesChoose, 1 mark, Plus, Higher tier
- Ionic equation for a displacementChoose, 1 mark, Plus, Higher tier
- The ionic equation for neutralisationChoose, 1 mark, Plus
- Oxidised or reduced (oxygen)Choose, 1 mark, Plus
- Reactivity order from displacement resultsChoose, 1 mark, Plus
- Reactivity order from experiment dataChoose, 1 mark, Plus
- Required practical: variables in electrolysisChoose, 1 mark, Plus
- Required practical: testing the gases from electrolysisChoose, 1 mark, Plus
- Choosing reactants to make a saltChoose, 1 mark, Plus
- Formula of a salt from its ionsChoose, 1 mark, Plus
- Naming the salt from an acid and a baseChoose, 1 mark, Plus
- Products of acid and base reactionsChoose, 1 mark, Plus
- Required practical: steps for making a saltChoose, 1 mark, Plus
- Required practical: why each step is doneExplain, 1 mark, Plus
- Spotting the spectator ionChoose, 1 mark, Plus, Higher tier
- Metals with water and with acidChoose, 1 mark, Plus
- Balancing a metal and acid equationComplete, 2 marks, Plus
- Metal and acid: products and the gas testChoose, 2 marks, Plus
- Products of electrolysing a solutionChoose, 2 marks, Plus
- Products of electrolysing a molten compoundChoose, 2 marks, Plus
- Balancing an extraction equationComplete, 2 marks, Plus
- Balancing a neutralisation equationComplete, 2 marks, Plus
- Oxidised or reduced (electrons)Choose, 2 marks, Plus, Higher tier
- New pH after a change in concentrationCalculate, 2 marks, Plus, Higher tier
- pH and hydrogen ion concentrationCalculate, 2 marks, Plus, Higher tier
- Reading the pH scaleChoose, 2 marks, Plus
- Strong and weak acidsChoose, 2 marks, Plus, Higher tier
- Neutralisation volumes in proportionCalculate, 4 marks, Plus
- What activation energy meansChoose, 1 mark, Plus
- Energy released for more than one moleCalculate, 1 mark, Plus, Higher tier
- What a catalyst does to the profileChoose, 1 mark, Plus
- Everyday exothermic and endothermic reactionsChoose, 1 mark, Plus
- Bonds and exothermic reactionsChoose, 1 mark, Plus
- Reading the type of reaction from a profileChoose, 1 mark, Plus
- Spotting an anomalous resultChoose, 1 mark, Plus
- Why a polystyrene cup with a lidChoose, 1 mark, Plus
- Biggest temperature rise from a tableCalculate, 1 mark, Plus
- Mean temperature riseCalculate, 1 mark, Plus
- Variables in the temperature change practicalChoose, 1 mark, Plus
- The sign of ΔHChoose, 1 mark, Plus
- Where the energy goesChoose, 1 mark, Plus
- Using exothermic and endothermic reactionsChoose, 1 mark, Plus
- Picking the exothermic reaction from dataChoose, 1 mark, Plus
- Energy needed to break the bondsCalculate, 2 marks, Plus, Higher tier
- Breaking and making bondsChoose, 2 marks, Plus, Higher tier
- How much a catalyst lowers the activation energyCalculate, 2 marks, Plus
- Activation energy from energy valuesCalculate, 2 marks, Plus
- Exothermic or endothermic from temperaturesChoose, 2 marks, Plus
- Why a reaction mixture gets hotExplain, 2 marks, Plus
- Activation energy and energy change from a profileDetermine, 2 marks, Plus
- Activation energy of the reverse reactionCalculate, 2 marks, Plus, Higher tier
- Bond energies: making ammoniaCalculate, 3 marks, Plus, Higher tier
- Bond energies: adding hydrogen to etheneCalculate, 3 marks, Plus, Higher tier
- Bond energies: hydrogen and a halogenCalculate, 3 marks, Plus, Higher tier
- Bond energies: burning methaneCalculate, 3 marks, Plus, Higher tier
- Finding an unknown bond energyCalculate, 3 marks, Plus, Higher tier
- Bond energies: hydrogen burningCalculate, 3 marks, Plus, Higher tier
- Maximum temperature from two linesDetermine, 3 marks, Plus
- Temperature change and uncertaintyCalculate, 3 marks, Plus
- What a catalyst doesChoose, 1 mark, Plus
- What dynamic equilibrium meansChoose, 1 mark, Plus
- Linking a factor to collision theoryExplain, 1 mark, Plus
- Which change does not speed up a reactionChoose, 1 mark, Plus
- Predicting a new curveChoose, 1 mark, Plus
- What the shape of a rate curve meansChoose, 1 mark, Plus
- A catalyst and equilibriumChoose, 1 mark, Plus, Higher tier
- Colour changes at equilibriumChoose, 1 mark, Plus, Higher tier
- Temperature: yield against rateChoose, 1 mark, Plus, Higher tier
- Ways of measuring a rateChoose, 1 mark, Plus
- Reversible reactionsChoose, 1 mark, Plus
- Required practical: errors and improvementsChoose, 1 mark, Plus
- Required practical: putting the method in orderChoose, 1 mark, Plus
- Units of rateChoose, 1 mark, Plus
- Which curve shows the faster reactionCompare, 2 marks, Plus
- Equilibrium and concentrationChoose, 2 marks, Plus, Higher tier
- Equilibrium and pressureChoose, 2 marks, Plus, Higher tier
- Equilibrium and temperatureChoose, 2 marks, Plus, Higher tier
- Mean rate of using up a reactant (standard form)Calculate, 2 marks, Plus
- Energy change of the reverse reactionDetermine, 2 marks, Plus
- Mean rate between two times from a tableCalculate, 2 marks, Plus
- Using the doubling rule of thumbEstimate, 2 marks, Plus
- Time from a mean rateCalculate, 2 marks, Plus
- Spotting the catalyst from resultsDetermine, 3 marks, Plus
- When equilibrium is reached, from a graphDetermine, 3 marks, Plus
- Counting molecules of gas on each sideCalculate, 3 marks, Plus, Higher tier
- Mean rate between two times from a graphCalculate, 3 marks, Plus
- Rate at an instant from a tangentDetermine, 3 marks, Plus, Higher tier
- Explaining the effect of pressure on yieldExplain, 3 marks, Plus, Higher tier
- Mean rate from a volume of gasCalculate, 3 marks, Plus
- Mean rate from mass lostCalculate, 3 marks, Plus
- Mean rate in mol/sCalculate, 3 marks, Plus, Higher tier
- Required practical: rate as 1000 ÷ timeCalculate, 3 marks, Plus
- Required practical: the variablesChoose, 3 marks, Plus
- Activation energy with and without a catalystCalculate, 4 marks, Plus
- Reading a volume-time graphDetermine, 4 marks, Plus
- Energy for a given mass in a reversible reactionCalculate, 4 marks, Plus, Higher tier
- Required practical: mean and uncertaintyCalculate, 4 marks, Plus
- Surface area to volume ratio of a cubeCalculate, 4 marks, Plus
- Cutting a cube into smaller cubesCalculate, 4 marks, Plus
- Why a higher temperature speeds up a reactionExplain, 4 marks, Plus
- Required practical: repeats and an anomalyCalculate, 5 marks, Plus
- Required practical: comparing two acids by gas volumeCalculate, 5 marks, Plus
- Required practical: plotting rate against concentrationPlot, 5 marks, Plus
- Carbon atoms in an alkaneCalculate, 1 mark, Plus
- The formula of an alkaneChoose, 1 mark, Plus
- Hydrogen atoms in an alkaneCalculate, 1 mark, Plus
- Naming an alkaneChoose, 1 mark, Plus
- Products of combustionChoose, 1 mark, Plus
- How and why alkanes are crackedChoose, 1 mark, Plus
- Where an alkane leaves the columnChoose, 1 mark, Plus
- Comparing two fractionsChoose, 1 mark, Plus
- Uses of crude oil fractionsChoose, 1 mark, Plus
- Homologous seriesChoose, 1 mark, Plus
- Spotting a hydrocarbonChoose, 1 mark, Plus
- Balancing complete combustionComplete, 2 marks, Plus
- Supply and demand for fractionsChoose, 2 marks, Plus
- Balancing incomplete combustionComplete, 2 marks, Plus
- Mr of a hydrocarbon or alcoholCalculate, 2 marks, Plus
- Boiling point from a homologous seriesEstimate, 3 marks, Plus
- The bromine water testChoose, 3 marks, Plus
- The missing product of crackingCalculate, 3 marks, Plus
- Percentage of carbon by massCalculate, 3 marks, Plus
- Mass of carbon dioxide from burning a fuelCalculate, 6 marks, Plus, Higher tier
- Fractional distillation of crude oil (6 marks)Describe, 6 marks, Plus
- What a formulation isChoose, 1 mark, Plus
- The test for chlorineChoose, 1 mark, Plus
- Predict the gas test result for a reactionChoose, 1 mark, Plus
- Name the gas from a test resultChoose, 1 mark, Plus
- The chemistry behind the gas testsExplain, 1 mark, Plus
- What impurities do to melting and boiling pointsChoose, 1 mark, Plus
- Locating agents for colourless substancesChoose, 1 mark, Plus
- Mobile and stationary phasesChoose, 1 mark, Plus
- Pure in chemistry and pure on a labelChoose, 1 mark, Plus
- Reasons for the steps in chromatographyExplain, 1 mark, Plus
- Variables in the chromatography practicalChoose, 1 mark, Plus
- Which substances are in the mixtureChoose, 2 marks, Plus
- Percentage of a component in a formulationCalculate, 2 marks, Plus
- Describe a gas testDescribe, 2 marks, Plus
- Test and result for a gasChoose, 2 marks, Plus
- Which water sample is pure: boiling pointsChoose, 2 marks, Plus
- Which sample is pure: melting pointsChoose, 2 marks, Plus
- Distance from an Rf valueCalculate, 2 marks, Plus
- Mass of a component from a percentageCalculate, 3 marks, Plus
- Identify gases from a results tableChoose, 3 marks, Plus
- Rf value when the start line is not at the edgeCalculate, 3 marks, Plus
- Scaling up a formulationCalculate, 4 marks, Plus
- What dry air is made ofChoose, 1 mark, Plus
- Bioleaching and getting the metal outChoose, 1 mark, Plus, Higher tier
- Effects of global climate changeChoose, 1 mark, Plus
- DesalinationChoose, 1 mark, Plus
- The order of events in the early atmosphereChoose, 1 mark, Plus
- Where the gases came from and wentChoose, 1 mark, Plus
- Finite and renewable resourcesChoose, 1 mark, Plus
- Spotting a greenhouse gasChoose, 1 mark, Plus
- How the greenhouse effect worksChoose, 1 mark, Plus
- Which greenhouse gas an activity addsChoose, 1 mark, Plus
- What a life cycle assessment can and cannot tell youChoose, 1 mark, Plus
- PhytominingChoose, 1 mark, Plus, Higher tier
- Atmospheric pollutants and their effectsChoose, 1 mark, Plus
- Reduce, reuse and recycleChoose, 1 mark, Plus
- Required practical: pH and distillationChoose, 1 mark, Plus
- Filtering and sterilising drinking waterChoose, 1 mark, Plus
- Treating waste waterChoose, 1 mark, Plus
- Percentage of a gas in a sampleCalculate, 2 marks, Plus
- Volume of a gas in a sample of airEstimate, 2 marks, Plus
- Balancing an equation from the atmosphere topicComplete, 2 marks, Plus
- Percentage change from a data tableCalculate, 2 marks, Plus
- Putting water treatment steps in orderComplete, 2 marks, Plus
- Reading a greenhouse gas graph and a percentage increaseCalculate, 3 marks, Plus
- Mass of scrap iron to displace copperCalculate, 3 marks, Plus, Higher tier
- Reading a life cycle assessmentCompare, 3 marks, Plus
- Mass of sulfur dioxide from burning a fuelCalculate, 3 marks, Plus
- How the atmosphere changed (6 marks)Describe, 6 marks, Plus
- Plan: analysing and purifying a water sample (6 marks)Describe, 6 marks, Plus
- What Mr meansChoose, 1 mark, Plus
- Electrolysis of brine or aluminium oxide (6 marks)Explain, 6 marks, Plus
- Making pure, dry copper sulfate crystals (6 marks)Describe, 6 marks, Plus
- Transition metals and Group 1Choose, 1 mark, Plus, Chemistry only
- From plum pudding to the nuclear model (6 marks)Describe, 6 marks, Plus
- Group 1 metals and water (6 marks)Compare, 6 marks, Plus
- Why nanoparticle catalysts work so wellChoose, 1 mark, Plus, Chemistry only
- Classifying particles by sizeChoose, 1 mark, Plus, Chemistry only
- Uses of nanoparticlesChoose, 1 mark, Plus, Chemistry only
- How many times biggerCalculate, 2 marks, Plus, Chemistry only
- Nanometres and standard formCalculate, 2 marks, Plus, Chemistry only
- Comparing surface area to volume ratiosCalculate, 2 marks, Plus, Chemistry only
- Benefits and risks of nanoparticlesEvaluate, 3 marks, Plus, Chemistry only
- Reactions with 100 percent atom economyChoose, 1 mark, Plus, Chemistry only
- Limiting reactants and excessChoose, 1 mark, Plus, Higher tier
- Titration techniqueChoose, 1 mark, Plus, Chemistry only
- Using a percentage yieldCalculate, 2 marks, Plus, Chemistry only
- Reacting volumes of gasesCalculate, 2 marks, Plus, Chemistry only, Higher tier
- Moles in a volume of solutionCalculate, 2 marks, Plus, Chemistry only, Higher tier
- Percentage yieldCalculate, 2 marks, Plus, Chemistry only
- Why yields are below 100 percentChoose, 2 marks, Plus, Chemistry only
- Atom economyCalculate, 3 marks, Plus, Chemistry only
- Converting between mol/dm³ and g/dm³Calculate, 3 marks, Plus, Chemistry only, Higher tier
- Volume of a gas from moles or massCalculate, 3 marks, Plus, Chemistry only, Higher tier
- Concentration in mol/dm³Calculate, 3 marks, Plus, Chemistry only, Higher tier
- Mass of solute to make a solutionCalculate, 3 marks, Plus, Chemistry only, Higher tier
- Which solution is most concentrated?Compare, 4 marks, Plus, Chemistry only, Higher tier
- Moles and mass from a gas volumeCalculate, 4 marks, Plus, Chemistry only, Higher tier
- Volume of gas made in a reactionCalculate, 4 marks, Plus, Chemistry only, Higher tier
- Concordant titres and the meanDetermine, 4 marks, Plus, Chemistry only
- Comparing the atom economy of two routesCompare, 5 marks, Plus, Chemistry only
- Formula of an oxide from a crucible experimentDetermine, 5 marks, Plus, Higher tier
- The limiting reactant and the mass of productDetermine, 5 marks, Plus, Higher tier
- Reacting masses step by stepCalculate, 5 marks, Plus, Higher tier
- Concentration of an acid from a titrationCalculate, 5 marks, Plus, Chemistry only, Higher tier
- Theoretical mass, then percentage yieldCalculate, 5 marks, Plus, Chemistry only, Higher tier
- Required practical: titration methodChoose, 1 mark, Plus, Chemistry only
- Mass of product from electrolysisCalculate, 3 marks, Plus, Higher tier
- Mass of metal in an oxideCalculate, 3 marks, Plus
- Required practical: copper electrodes and currentDetermine, 3 marks, Plus
- Required practical: mean mass of crystalsDetermine, 3 marks, Plus
- mol/dm³ and g/dm³Calculate, 3 marks, Plus, Chemistry only, Higher tier
- Required practical: titres and the mean titreCalculate, 3 marks, Plus, Chemistry only
- Predicting a titreCalculate, 3 marks, Plus, Chemistry only, Higher tier
- Which pair gives the biggest voltageChoose, 1 mark, Plus, Chemistry only
- Which metal is the negative electrodeChoose, 1 mark, Plus, Chemistry only
- Cells joined in seriesCalculate, 1 mark, Plus, Chemistry only
- Hydrogen fuel cellsChoose, 1 mark, Plus, Chemistry only
- Fuel cells against batteriesChoose, 1 mark, Plus, Chemistry only
- Rechargeable and non-rechargeable cellsChoose, 1 mark, Plus, Chemistry only
- Cell voltage from a reactivity tableCalculate, 2 marks, Plus, Chemistry only
- Hydrogen fuel cells or batteries for a delivery van (6 marks)Evaluate, 6 marks, Plus, Chemistry only
- Plan: temperature change of a neutralisation (6 marks)Describe, 6 marks, Plus
- Carboxylic acid and a carbonateChoose, 1 mark, Plus, Chemistry only
- Naming carboxylic acidsChoose, 1 mark, Plus, Chemistry only
- Carboxylic acids are weak acidsChoose, 1 mark, Plus, Chemistry only
- Conditions for addition reactionsChoose, 1 mark, Plus, Chemistry only
- Naming an addition productChoose, 1 mark, Plus, Chemistry only
- The product of an addition reactionChoose, 1 mark, Plus, Chemistry only
- Naming alcoholsChoose, 1 mark, Plus, Chemistry only
- Reactions of alcoholsChoose, 1 mark, Plus, Chemistry only
- Alkene formula from the general formulaCalculate, 1 mark, Plus, Chemistry only
- Naming alkenesChoose, 1 mark, Plus, Chemistry only
- Amino acids and proteinsChoose, 1 mark, Plus, Chemistry only
- Addition or condensationChoose, 1 mark, Plus, Chemistry only
- Conditions for fermentationChoose, 1 mark, Plus, Chemistry only
- Monomer from a repeat unitChoose, 1 mark, Plus, Chemistry only
- Naturally occurring polymersChoose, 1 mark, Plus, Chemistry only
- The acid an alcohol oxidises toChoose, 1 mark, Plus, Chemistry only
- Picking out the alkenesChoose, 1 mark, Plus, Chemistry only
- Mr of an addition productCalculate, 2 marks, Plus, Chemistry only
- Balancing the combustion of an alcoholComplete, 2 marks, Plus, Chemistry only
- Water lost in condensation polymerisationCalculate, 2 marks, Plus, Chemistry only
- Mass of bromine that adds to an alkeneCalculate, 3 marks, Plus, Chemistry only, Higher tier
- Making and naming an esterChoose, 3 marks, Plus, Chemistry only
- Mr of a polymer chainCalculate, 3 marks, Plus, Chemistry only
- Repeat unit of an addition polymerChoose, 3 marks, Plus, Chemistry only
- Two ways to make ethanol (6 marks)Compare, 6 marks, Plus, Chemistry only
- Negative ion from a test resultChoose, 1 mark, Plus, Chemistry only
- How flame emission spectroscopy worksExplain, 1 mark, Plus, Chemistry only
- Flame test coloursChoose, 1 mark, Plus, Chemistry only
- Metal ion from a flame colourChoose, 1 mark, Plus, Chemistry only
- Doing a flame test wellExplain, 1 mark, Plus, Chemistry only
- Metal hydroxide precipitatesChoose, 1 mark, Plus, Chemistry only
- Metal ion from a hydroxide precipitateChoose, 1 mark, Plus, Chemistry only
- Ionic equation for a precipitateChoose, 1 mark, Plus, Chemistry only, Higher tier
- Which metal is not in the sampleChoose, 1 mark, Plus, Chemistry only
- Telling the white precipitates apartChoose, 1 mark, Plus, Chemistry only
- Why the acid comes first in the anion testsExplain, 1 mark, Plus, Chemistry only
- Concentration from a calibration lineDetermine, 2 marks, Plus, Chemistry only
- Three unknown solutions: results tableDetermine, 2 marks, Plus, Chemistry only
- Advantages of instrumental methodsChoose, 2 marks, Plus, Chemistry only
- The silver nitrate test for halidesChoose, 2 marks, Plus, Chemistry only
- Metals in a mixture from line spectraChoose, 2 marks, Plus, Chemistry only
- Plot a calibration line and use itPlot, 3 marks, Plus, Chemistry only
- Name a compound from two test resultsDetermine, 3 marks, Plus, Chemistry only
- Calibration line with a diluted sampleCalculate, 4 marks, Plus, Chemistry only
- Alloys and their usesChoose, 1 mark, Plus, Chemistry only
- Why the Haber conditions are a compromiseExplain, 1 mark, Plus, Chemistry only, Higher tier
- Haber process conditionsChoose, 1 mark, Plus, Chemistry only
- Glass, ceramics and compositesChoose, 1 mark, Plus, Chemistry only
- NPK fertilisers and how they are madeChoose, 1 mark, Plus, Chemistry only
- Thermosoftening and thermosetting polymersChoose, 1 mark, Plus, Chemistry only
- Rusting experiment: what the tubes showChoose, 1 mark, Plus, Chemistry only
- Preventing corrosionChoose, 1 mark, Plus, Chemistry only
- Percentage composition of an alloyCalculate, 2 marks, Plus, Chemistry only
- Gold carats as a percentageCalculate, 4 marks, Plus, Chemistry only
- Reading Haber process yield dataDetermine, 4 marks, Plus, Chemistry only
- Energy saved by recyclingCalculate, 4 marks, Plus
- Required practical: mass of dissolved solidsCalculate, 4 marks, Plus
- Carbon footprint of a commuteCalculate, 5 marks, Plus
- Mass of ammonia from nitrogenCalculate, 5 marks, Plus, Chemistry only, Higher tier
- Percentage of a nutrient in a fertiliserCalculate, 5 marks, Plus, Chemistry only
- Required practical: repeats, anomaly and meanDetermine, 5 marks, Plus
- Evaluating the Haber process conditions (6 marks)Evaluate, 6 marks, Plus, Chemistry only, Higher tier
- Plan a chromatography investigation (6 marks)Describe, 6 marks, Plus
- Plan to identify the ions in an unknown salt (6 marks)Describe, 6 marks, Plus, Chemistry only
- Repeat runs: anomaly, mean and RfCalculate, 6 marks, Plus
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