5.1ATOMIC STRUCTURE AND THE PERIODIC TABLE
Nov20·C2F 2m 04.1 — Completing the word equation for H2O2 decomposition
Jun23·C2F 1m 05.3 — Identifying the shared element across the pollutant gases (5.9.3.1 noted)
Jun25·C2F 1m 03.4 — Balancing the methanol combustion equation (5.8.1.2 noted)
Jun18·C2F 2m 05.2 — Naming the three products of the reaction (5.3.1.3 noted)
Jun19·C2F 1m 03.1 — Balancing the Mg + HCl equation (5.3.1.1, 5.6.1.1 noted)
Spec·C2F 1m 03.2 — Naming the Cl- ion
Nov21·C2F 2m 01.4 — Matching substance to description
Jun19·C2F 3m 01.1 — Matching substance to description (5.1.1.1, 5.8.1.1 noted)
Jun18·C2F 1m 01.1 — Completing the particle-count table for sulfur
Jun18·C2F 1m 🖨️01.2 — Completing the electronic structure of sulfur
5.2BONDING, STRUCTURE AND PROPERTIES OF MATTER
Nov20·C2F 1m 01.5 — Identifying what bond X represents (5.2.2.4 noted)
Jun23·C2F 2m 05.7 — Explaining why water vapour, not liquid water, forms (5.9.3.1 noted)
Jun18·C2F 1m 03.3 — Identifying the change of state at the sea water surface (5.1.1.2 noted)
Spec·C2F 2m 02.3 — Naming the changes of state at A and B
Jun22·C2F 1m 03.2 — Identifying the state symbol for ammonia
Jun19·C2F 2m 02.2 — Explaining why SiO2 has a high melting point (5.2.1.4 noted)
5.3QUANTITATIVE CHEMISTRY
Jun19·C2F 3m 05.3 — Calculating the mass of iron needed
Jun22·C2F 3m 07.3 — Calculating the concentration of sodium chloride
Jun19·C2F 4m 06.4 — Calculating mass of dissolved solids in a different volume
5.6THE RATE AND EXTENT OF CHEMICAL CHANGE
Nov20·C2F 1m 04.5 — Suggesting how to identify the best catalyst from the graphs (5.6.1.2 noted)
Nov20·C2F 1m 04.6 — Explaining why all graphs level off at the same volume (5.6.1.2 noted)
Nov20·C2F 3m 07.2 — Calculating the mean rate of reaction between 1-3 min
Nov21·C2F 3m 🖨️06.2 — Plotting the data + line of best fit (RP11 noted)
Nov21·C2F 1m 06.3 — Identifying how the rate changes with time (RP11 noted)
Jun22·C2F 2m 04.1 — Matching variable type to example (RP11 noted, named in full)
Jun22·C2F 3m 🖨️04.3 — Plotting the data and drawing a line of best fit (RP11 noted)
Jun22·C2F 1m 04.4 — Predicting the time using the graph (RP11 noted)
Jun22·C2F 1m 04.5 — Completing the sentence on time vs concentration (RP11 noted)
Jun22·C2F 2m 04.6 — Calculating the mean rate of reaction (RP11 noted)
Jun22·C2F 1m 04.7 — Identifying the unit for mean rate (RP11 noted)
Jun22·C2F 3m 04.8 — Calculating the mean time, excluding the anomaly (RP11 noted)
Jun25·C2F 4m 02.6 — Completing the results table (RP11; 5.6.1.2 noted)
Jun25·C2F 3m 02.7 — Calculating the mean rate and its unit (RP11 noted)
Jun18·C2F 1m 05.4 — Calculating the mean rate of reaction
Jun18·C2F 1m 05.5 — Identifying the unit for mean rate
Jun18·C2F 3m 🖨️05.6 — Plotting the data and drawing a line of best fit
Jun19·C2F 1m 03.2 — Identifying the most accurate measuring apparatus
Jun19·C2F 4m 03.3 — Completing the results table
Nov20·C2F 2m 04.7 — Explaining why rate is faster at higher temperature (5.6.1.3 noted)
Nov20·C2F 6m 07.1 — Describing an accurate method for the temperature-rate investigation
Nov20·C2F 2m 🖨️07.3 — Drawing the expected curve at 50C (5.6.1.1 noted)
Nov21·C2F 2m 06.1 — Giving the independent + control variable (RP11 noted, named in full)
Nov21·C2F 1m 06.4 — Identifying the correct statement about higher concentration
Nov21·C2F 3m 06.5 — Explaining how temperature affects rate (5.6.1.3 noted)
Jun22·C2F 1m 04.2 — Reading the thermometer temperature (RP11 noted)
Jun23·C2F 1m 04.6 — Completing the sentence on temperature's effect on rate
Jun24·C2F 6m 07.1 — Describing a method to produce valid results (RP11 noted, named in full)
Jun25·C2F 1m 02.1 — Naming equipment to measure mass (RP11 noted, named in full)
Jun25·C2F 1m 02.2 — Reading the gas syringe volume (RP11 noted)
Jun25·C2F 1m 02.3 — Identifying the independent variable (RP11 noted)
Jun25·C2F 1m 02.4 — Explaining why the stopper was inserted quickly (RP11 noted)
Jun18·C2F 2m 05.1 — Matching variable type to example
Jun18·C2F 1m 05.3 — Suggesting why cotton wool improves the investigation
Jun19·C2F 1m 03.4 — Suggesting why gas volumes were lower than expected
Jun19·C2F 2m 03.5 — Giving two variables to keep the same
Jun19·C2F 3m 03.6 — Completing the rate/collisions sentences (5.6.1.3 noted)
Spec·C2F 6m 07.1 — Outlining a plan to investigate concentration vs rate
Spec·C2F 1m 07.2 — Reading the gas syringe volume
Spec·C2F 3m 🖨️07.3 — Plotting the data and drawing a line of best fit
Spec·C2F 1m 07.4 — Giving a conclusion on concentration's effect on rate
Jun25·C2F 2m 02.8 — Identifying two reasons concentration increases rate (5.6.1.2 noted)
Jun18·C2F 1m 05.7 — Identifying why small chips react faster (5.6.1.2 noted)
Nov20·C2F 1m 04.2 — Identifying two controlled variables
Nov20·C2F 1m 04.3 — Reading the gas syringe volume
Nov20·C2F 3m 🖨️04.4 — Plotting the data and drawing a line of best fit
Nov21·C2F 2m 02.5 — Identifying which two statements about catalysts are correct
Jun22·C2F 1m 03.6 — Identifying activation energy on the reaction profile
Jun22·C2F 1m 03.7 — Giving a reason why a catalyst reduces costs
Jun23·C2F 1m 04.1 — Writing the word equation for H2O2 decomposition
Jun23·C2F 2m 04.2 — Identifying two control variables
Jun23·C2F 3m 🖨️04.3 — Plotting the data and drawing a line of best fit
Jun23·C2F 2m 04.4 — Identifying the best catalyst, with a reason, from the graph
Jun23·C2F 1m 04.5 — Completing the sentence on result accuracy
Jun24·C2F 2m 07.3 — Defining "catalyst"
Jun24·C2F 2m 07.2 — Defining "catalyst"
Jun24·C2F 1m 07.4 — Naming biological catalysts
Jun19·C2F 1m 🖨️05.4 — Drawing the activation energy arrow
Jun19·C2F 2m 🖨️05.5 — Drawing the reaction profile with a catalyst
Jun19·C2F 1m 05.6 — Naming biological catalysts
Nov21·C2F 1m 01.1 — Explaining how the equation shows the reaction is reversible
Jun22·C2F 1m 03.1 — Naming the product with formula HCl
Jun22·C2F 1m 03.3 — Explaining how the equation shows reversibility
Jun24·C2F 1m 02.3 — Identifying how the equation shows reversibility (5.6.2.2 noted)
Jun18·C2F 1m 04.3 — Identifying the reversible-reaction symbol
Jun19·C2F 1m 01.4 — Identifying the reversible symbol
Nov21·C2F 2m 01.2 — Completing the colour-change sentences
Nov21·C2F 1m 01.3 — Suggesting why kept in a sealed container
Jun22·C2F 1m 03.4 — Completing the sentence on the reverse reaction
Jun24·C2F 2m 02.2 — Completing the sentence on the colour change
Jun24·C2F 1m 02.4 — Calculating the total atoms in the formula
Jun25·C2F 1m 03.7 — Suggesting an observation when water is added
Jun25·C2F 1m 03.8 — Identifying the type of the reverse reaction
Jun19·C2F 1m 01.5 — Completing the exothermic/endothermic sentence
Jun22·C2F 1m 03.5 — Completing the equilibrium definition
Jun23·C2F 1m 03.5 — Completing the equilibrium definition
Jun18·C2F 1m 04.4 — Completing the equilibrium definition
Jun19·C2F 1m 01.6 — Completing the equilibrium definition
5.7ORGANIC CHEMISTRY
Nov20·C2F 2m 01.1 — Completing sentences on crude oil formation
Nov20·C2F 1m 01.4 — Identifying the formula of the alkane shown
Nov20·C2F 1m 01.6 — Identifying the general formula for alkanes
Nov21·C2F 1m 07.1 — Completing: crude oil formed by decomposition of ___
Nov21·C2F 1m 07.2 — Naming the alkane with 3 carbons
Jun22·C2F 1m 05.1 — Completing the formula shown
Jun22·C2F 1m 05.2 — Naming the hydrocarbon shown
Jun22·C2F 1m 05.3 — Identifying the homologous series
Jun22·C2F 1m 05.4 — Identifying the correct % carbon calculation
Jun23·C2F 1m 01.2 — Identifying what crude oil is formed from
Jun23·C2F 1m 01.3 — Identifying the type of substance crude oil is
Jun24·C2F 1m 06.1 — Defining "hydrocarbon"
Jun24·C2F 1m 06.2 — Determining the formula of the 10-carbon alkane
Jun25·C2F 1m 01.1 — Identifying what crude oil is produced from
Jun25·C2F 1m 01.2 — Naming compounds made of carbon and hydrogen only
Jun25·C2F 3m 01.3 — Giving three differences in crude oil composition (5.7.1.2 noted)
Jun25·C2F 1m 05.1 — Completing the formula of dodecane
Jun18·C2F 1m 06.3 — Naming the alkane represented
Jun18·C2F 1m 06.4 — Identifying the general formula for alkanes
Jun19·C2F 1m 🖨️04.2 — Completing the displayed structural formula of butane
Spec·C2F 2m 02.6 — Describing how the fuel differs from crude oil
Spec·C2F 2m 06.2 — Describing the differences between cracking and distillation (5.7.1.2 noted)
Nov20·C2F 1m 01.2 — Ordering the three separation stages
Nov20·C2F 1m 01.3 — Naming the separation process (5.1.1.2 noted)
Jun23·C2F 2m 01.4 — Completing the sentences on fractional distillation (5.2.2.1 noted)
Jun23·C2F 3m 01.7 — Calculating the percentage of LPG
Jun24·C2F 4m 06.3 — Explaining how crude oil separates into fractions
Jun25·C2F 3m 01.4 — Calculating the volume of kerosene (5.7.1.1 noted)
Jun25·C2F 3m 🖨️01.5 — Completing the bar chart for crude oil composition (5.7.1.1 noted)
Jun18·C2F 1m 06.1 — Completing the fraction-condensing sentence
Jun18·C2F 1m 06.2 — Identifying why fractions separate (5.7.1.3 noted)
Spec·C2F 1m 02.1 — Identifying apparatus W (5.1.1.2 noted)
Spec·C2F 1m 02.2 — Naming this method of separation
Nov20·C2F 1m 06.1 — Balancing the propane combustion equation (5.1.1.1 noted)
Nov21·C2F 6m 07.3 — Comparing structure/properties of methane and hexane (5.7.1.1, 5.2.2.4 noted)
Jun22·C2F 1m 05.5 — Describing the boiling-point trend with chain length
Jun23·C2F 1m 05.1 — Balancing the methane combustion equation
Jun23·C2F 2m 05.2 — Comparing petrol and diesel properties
Jun25·C2F 1m 05.2 — Suggesting why a water bath was used
Jun25·C2F 1m 05.3 — Giving one control variable
Jun25·C2F 2m 🖨️05.4 — Predicting the time at 75C, extending the line
Jun25·C2F 2m 05.5 — Explaining how the trend shows temperature's effect on viscosity
Jun18·C2F 1m 06.5 — Balancing the methane combustion equation (5.1.1.1 noted)
Jun19·C2F 2m 04.3 — Completing the word equation for butane combustion
Spec·C2F 1m 02.4 — Identifying which hydrocarbon collects last
Spec·C2F 2m 02.7 — Calculating the mean melting point, excluding the anomaly
Spec·C2F 1m 04.1 — Identifying what's seen in tube A
Nov20·C2F 1m 06.3 — Completing the symbol equation for propane cracking (5.1.1.1 noted)
Nov20·C2F 3m 06.5 — Describing the test and colour change for alkenes
Nov21·C2F 1m 07.4 — Completing the cracking equation (5.3.1.1 noted)
Nov21·C2F 2m 07.5 — Describing the test and result for alkenes
Jun22·C2F 1m 05.6 — Giving one condition used for cracking
Jun22·C2F 1m 05.7 — Balancing the cracking equation (5.1.1.1, 5.3.1.1 noted)
Jun22·C2F 1m 05.8 — Giving a reason why hydrocarbons are cracked
Jun23·C2F 1m 01.5 — Completing the sentence on cracking products
Jun24·C2F 1m 06.4 — Balancing the cracking equation (5.1.1.1 noted)
Jun24·C2F 2m 06.5 — Describing the test and result for alkenes
Jun24·C2F 1m 06.6 — Identifying the type of substance poly(propene) is (5.2.1.4 noted)
Jun25·C2F 2m 04.6 — Identifying two conditions used for cracking
Jun25·C2F 1m 04.7 — Identifying the chemical used to test for alkenes
Jun18·C2F 1m 06.6 — Identifying the alkene test reagent
Jun19·C2F 2m 04.1 — Giving two conditions for cracking
Jun19·C2F 2m 04.4 — Giving the test and result for alkenes
Spec·C2F 1m 06.1 — Balancing the cracking equation
Spec·C2F 1m 06.3 — Identifying the type of reaction cracking is
5.8CHEMICAL ANALYSIS
Nov20·C2F 1m 05.1 — Identifying which substance is a mixture
Jun24·C2F 2m 02.1 — Identifying which substance is pure, with a reason
Jun19·C2F 2m 06.2 — Describing a test for pure water, giving the result
Nov20·C2F 1m 05.2 — Naming mixtures designed as useful products
Jun22·C2F 1m 03.8 — Naming a mixture designed as a useful product
Jun24·C2F 1m 03.1 — Naming a mixture designed as a useful product
Jun25·C2F 1m 03.1 — Naming the type of mixture screenwash is
Jun25·C2F 1m 03.2 — Identifying the number of atoms in glycerol (5.1.1.1 noted)
Jun18·C2F 1m 04.5 — Defining "formulation"
Jun18·C2F 1m 🖨️04.6 — Drawing the bar for potassium
Jun18·C2F 1m 04.7 — Identifying the correct % calculation for iron
Jun18·C2F 3m 04.8 — Evaluating fertiliser-use trend, using graph data
Jun19·C2F 1m 02.1 — Naming a mixture designed as a useful product
Jun19·C2F 2m 02.3 — Matching variable type to example
Jun19·C2F 3m 🖨️02.4 — Plotting the data and drawing a line of best fit
Jun19·C2F 2m 02.5 — Identifying the optimal mass, with reason
Jun19·C2F 1m 02.6 — Suggesting how Student B could improve their investigation
Spec·C2F 1m 02.5 — Naming the type of mixture the fuel is
Nov20·C2F 2m 05.3 — Matching phase to what is used for that phase
Nov20·C2F 3m 05.4 — Giving three conclusions about the dyes in Y
Nov20·C2F 2m 05.5 — Calculating the Rf value
Jun22·C2F 4m 06.1 — Identifying two setup errors and their effects (RP12 noted, named in full)
Jun22·C2F 2m 06.2 — Giving two conclusions from the results (RP12 noted)
Jun22·C2F 1m 06.3 — Explaining why the green colour stayed on the start line (RP12 noted)
Jun22·C2F 3m 06.4 — Calculating the distance moved by the solvent (RP12 noted)
Jun23·C2F 1m 06.1 — Identifying the stationary phase (RP12 noted, named in full)
Jun23·C2F 1m 06.2 — Explaining why substances separate in the mobile phase (RP12 noted)
Jun23·C2F 1m 06.3 — Identifying spots produced by a pure compound (RP12 noted)
Jun23·C2F 2m 06.4 — Calculating the Rf value (RP12 noted)
Jun23·C2F 6m 06.5 — Planning a chromatography experiment (RP12 noted)
Jun24·C2F 2m 03.2 — Identifying what should draw the start line, with a reason (RP12 noted, named in full)
Jun24·C2F 4m 03.3 — Determining the Rf value of the red colour (RP12 noted)
Jun24·C2F 2m 03.4 — Suggesting which colour matches the Rf value, with a reason (RP12 noted)
Jun18·C2F 2m 02.1 — Identifying the colours in the black ink
Jun18·C2F 2m 02.2 — Suggesting which colour is least soluble, with reason
Jun18·C2F 4m 02.3 — Calculating the Rf value for the green colour
Spec·C2F 4m 05.1 — Identifying two setup mistakes and their effects
Spec·C2F 1m 05.2 — Identifying the colours in the black ink
Spec·C2F 2m 05.3 — Identifying the most soluble ink, with a reason
Spec·C2F 5m 05.4 — Completing the table and calculating the Rf value
Spec·C2F 1m 05.5 — Explaining how the figure shows blue's higher Rf
Nov20·C2F 2m 06.4 — Describing the test and result for hydrogen
Jun23·C2F 1m 01.6 — Identifying the test used for hydrogen
Jun25·C2F 2m 03.5 — Describing the test and result for hydrogen
Jun22·C2F 1m 01.2 — Identifying the test used for oxygen gas
Jun25·C2F 2m 06.1 — Describing the test and result for oxygen
Jun19·C2F 2m 01.2 — Matching gas to test (5.8.2.3 noted)
Nov20·C2F 2m 06.2 — Describing the test and result for CO2
Nov21·C2F 1m 02.7 — Identifying the test for CO2
Jun25·C2F 1m 02.5 — Identifying the chemical name for limewater
Jun23·C2F 1m 03.6 — Completing the sentence on the chlorine test result
Jun24·C2F 2m 02.5 — Describing the test and result for chlorine
5.9CHEMISTRY OF THE ATMOSPHERE
Nov20·C2F 1m 02.1 — Identifying the highest % CO2 from the graph (5.9.1.2, 5.9.1.4 noted)
Nov21·C2F 1m 04.5 — Identifying which gas is found in larger quantities on Mars
Nov21·C2F 3m 04.6 — Calculating how many times more N2 than O2 on Earth
Jun22·C2F 1m 🖨️01.1 — Drawing the bar for oxygen
Jun23·C2F 1m 02.2 — Identifying the gas with highest % on Earth
Jun23·C2F 3m 02.3 — Calculating how many times more CO2 is on Mars
Jun24·C2F 2m 01.1 — Matching each gas to its atmospheric %
Jun18·C2F 1m 04.1 — Identifying today's % nitrogen
Spec·C2F 3m 01.4 — Matching each gas to its atmospheric %
Nov20·C2F 2m 02.2 — Identifying two processes that decreased CO2 %
Nov20·C2F 2m 02.4 — Completing the table using Figure 3
Nov20·C2F 1m 02.5 — Calculating the difference in dissolved CO2 mass
Nov21·C2F 1m 04.1 — Explaining uncertainty about % gases in the early atmosphere
Nov21·C2F 1m 04.2 — Identifying what formed from water vapour in the early atmosphere
Nov21·C2F 2m 04.3 — Matching gas to what produced it (5.9.1.3 noted)
Jun22·C2F 2m 01.3 — Completing sentences on how N2 and O2 % have changed (5.9.1.3 noted)
Jun22·C2F 2m 01.4 — Identifying two reasons CO2 has decreased (5.9.1.4 noted)
Jun23·C2F 2m 02.1 — Matching early-atmosphere change to its cause
Jun24·C2F 2m 01.2 — Identifying two reasons CO2 has decreased (5.9.1.4 noted)
Jun18·C2F 1m 04.2 — Giving a source of early nitrogen
Jun18·C2F 6m 07.5 — Explaining how N2/O2/CO2 % have changed (5.9.1.3, 5.9.1.4 noted)
Jun19·C2F 2m 01.3 — Giving two reasons CO2 % decreased (5.9.1.4 noted)
Spec·C2F 2m 01.1 — Completing the sentences on how CO2 decreased
Nov21·C2F 1m 04.4 — Explaining why animals can't live on Mars
Spec·C2F 1m 01.2 — Naming the process using CO2 and water
Spec·C2F 1m 01.3 — Completing the word equation for photosynthesis
Jun22·C2F 1m 02.1 — Naming the process in leaves that uses CO2
Jun22·C2F 1m 02.2 — Identifying how coal forms after trees die
Jun23·C2F 1m 02.6 — Naming the process in trees that uses CO2
Jun25·C2F 6m 06.2 — Explaining how gas percentages have changed (5.9.1.2, 5.9.1.3 noted)
Nov20·C2F 1m 02.6 — Ordering the four greenhouse-effect stages
Jun23·C2F 1m 02.8 — Determining % methane emissions from landfill
Nov21·C2F 2m 03.2 — Describing the trend in CO2 % from 1750-2000
Nov21·C2F 2m 03.3 — Determining the change in CO2 % 1950-2000
Nov21·C2F 1m 03.4 — Giving a reason why CO2 % is changing
Nov21·C2F 2m 🖨️03.5 — Predicting CO2 % in 2050, extending the graph line
Jun23·C2F 1m 02.4 — Identifying the CO2 trend from 1960-2020
Jun23·C2F 2m 02.7 — Giving two conclusions about forest area change
Jun24·C2F 3m 01.3 — Describing the CO2 trend from 1800-2020
Jun24·C2F 1m 01.4 — Identifying another greenhouse gas
Jun24·C2F 1m 01.5 — Identifying the environmental problem from greenhouse gases (5.9.2.3 noted)
Jun24·C2F 2m 01.6 — Calculating the Mr of carbon dioxide
Jun18·C2F 1m 07.1 — Naming another greenhouse gas
Spec·C2F 1m 01.5 — Explaining why CO2 changes global climate
Nov20·C2F 2m 02.7 — Giving two effects of climate change
Nov21·C2F 2m 03.1 — Giving two effects of climate change
Jun25·C2F 2m 03.6 — Giving two effects of climate change
Jun18·C2F 2m 07.2 — Giving two effects of climate change
Nov20·C2F 1m 02.3 — Naming the term for total CO2 emitted over a lifecycle
Jun25·C2F 2m 06.3 — Giving two ways to reduce methane emissions (5.9.2.2 noted)
Jun18·C2F 2m 07.3 — Calculating the carbon footprint of one bottle
Jun18·C2F 1m 07.4 — Suggesting a way to reduce CO2 in manufacture (5.10.2.2 noted)
Jun19·C2F 6m 07.2 — Evaluating the carbon footprint of three cars (5.9.2.2, 5.10.2.1 noted)
Spec·C2F 1m 01.6 — Identifying how countries can reduce CO2 emissions
Spec·C2F 1m 01.7 — Giving a reason why reducing emissions is difficult
Nov21·C2F 1m 🖨️02.1 — Drawing the bar for petrol on Figure 2
Nov21·C2F 1m 02.2 — Identifying which column has the greatest range (5.3.1.4 noted)
Nov21·C2F 2m 02.3 — Explaining why NO2 is lower on Sunday
Nov21·C2F 2m 02.4 — Calculating the mean NO2 concentration
Jun22·C2F 2m 01.5 — Identifying the two highest-NOx times
Jun22·C2F 1m 01.6 — Suggesting why concentrations peak at these times
Jun22·C2F 1m 02.3 — Naming the gas produced when sulfur burns
Jun23·C2F 2m 02.5 — Calculating CO2 mass emitted per person
Jun23·C2F 1m 05.4 — Identifying where the nitrogen comes from
Jun25·C2F 2m 06.4 — Describing how sulfur dioxide is produced
Jun25·C2F 1m 06.6 — Suggesting why sulfur dioxide has decreased since 1980 (5.10.2.2 noted)
Jun18·C2F 1m 01.3 — Completing the word equation for sulfur + oxygen (5.1.1.1 noted)
Jun18·C2F 3m 01.5 — Evaluating whether SO2 decreased every year, using graph data
Jun18·C2F 2m 01.6 — Calculating the % SO2 released by industry
Jun19·C2F 2m 07.1 — Describing how NOx is produced in an engine
Spec·C2F 2m 04.2 — Explaining why soot forms
Spec·C2F 1m 04.3 — Identifying which gas turned the indicator red
Nov21·C2F 1m 05.3 — Explaining why reducing SO2 emissions is important
Jun22·C2F 2m 02.4 — Giving two problems caused by that gas
Jun23·C2F 1m 05.5 — Identifying the environmental effect of particulates
Jun23·C2F 1m 05.6 — Giving a reason CO is hard to detect
Jun23·C2F 3m 05.8 — Explaining the environmental problem from sulfur impurities
Jun25·C2F 1m 03.3 — Identifying why carbon monoxide is a problem
Jun25·C2F 1m 06.5 — Giving one harmful effect of sulfur dioxide
Jun18·C2F 1m 01.4 — Identifying the effect caused by sulfur dioxide
5.10USING RESOURCES
Nov21·C2F 1m 02.6 — Completing the sentence on platinum as a finite resource (5.8.1.2 noted)
Nov21·C2F 1m 05.1 — Comparing population change vs copper production
Nov21·C2F 2m 05.4 — Calculating the mass of copper in the coin (75%)
Jun22·C2F 3m 02.5 — Describing the UK electricity fuel-source trend
Jun23·C2F 1m 01.1 — Defining a "finite" resource (5.7.1.1 noted)
Jun25·C2F 3m 04.3 — Calculating the number of hats from wool
Jun25·C2F 4m 04.4 — Explaining the advantages of poly(propene) and wool
Jun19·C2F 1m 04.5 — Naming the type of development described
Jun19·C2F 1m 05.1 — Identifying % mass of calcium in the crust
Jun19·C2F 1m 🖨️05.2 — Drawing the bar for magnesium
Nov20·C2F 1m 03.1 — Identifying equipment to find the mass of the basin (RP13 noted)
Nov20·C2F 1m 03.2 — Suggesting how the water-droplet error affects the mass (RP13 noted)
Nov20·C2F 1m 03.3 — Suggesting how to correct the error (RP13 noted)
Nov20·C2F 1m 03.4 — Suggesting how to correct the "not all water removed" error (RP13 noted)
Nov20·C2F 1m 03.5 — Naming the water-to-steam process (RP13 noted)
Nov20·C2F 1m 03.6 — Identifying the sample with the greatest range (RP13 noted)
Nov20·C2F 2m 03.7 — Calculating the mean mass X (RP13 noted)
Nov20·C2F 1m 03.8 — Identifying the dependent variable (RP13 noted)
Nov20·C2F 2m 03.9 — Calculating mass of dissolved solids in a different volume (RP13; 5.3.2.5 noted)
Nov21·C2F 1m 01.5 — Naming the process to obtain solid NaCl from solution (RP13 noted, named in full)
Nov21·C2F 2m 01.6 — Giving a reason for filtering/sterilising
Jun22·C2F 1m 07.2 — Identifying the process for potable water from salty water
Jun23·C2F 1m 03.1 — Giving a safety precaution (RP13 noted, named in full)
Jun23·C2F 2m 03.2 — Identifying two improvements for valid results (RP13 noted)
Jun23·C2F 1m 03.3 — Suggesting why distilled water is concluded pure (RP13 noted)
Jun23·C2F 1m 03.4 — Identifying why potable water is sterilised
Jun23·C2F 4m 03.7 — Comparing fluoride's effect on tooth decay across ages
Jun23·C2F 1m 03.8 — Suggesting a reason against fluoridation
Jun24·C2F 1m 04.1 — Naming water that is safe to drink
Jun24·C2F 2m 04.2 — Identifying two sterilisation methods
Jun24·C2F 1m 04.3 — Identifying the most suitable measuring equipment (RP13 noted, named in full)
Jun24·C2F 1m 04.4 — Calculating the mass of dissolved solids (RP13 noted)
Jun24·C2F 2m 04.5 — Matching each variable to its example (RP13 noted)
Jun24·C2F 3m 🖨️04.6 — Completing the bar chart for dissolved ion masses (RP13 noted)
Jun25·C2F 1m 04.1 — Defining "potable water"
Jun18·C2F 1m 03.1 — Identifying apparatus X
Jun18·C2F 3m 03.2 — Calculating the mean mass, excluding the anomaly
Jun18·C2F 1m 03.4 — Describing how the distilled water differs from sea water (5.1.1.2 noted)
Jun18·C2F 1m 03.5 — Explaining why distillation is costly
Jun18·C2F 2m 03.6 — Giving reasons for filtering and sterilising
Jun19·C2F 1m 06.1 — Naming water safe to drink
Jun19·C2F 4m 06.3 — Describing a method to find dissolved-solids mass
Jun19·C2F 2m 06.5 — Calculating % of the maximum allowed mass
Spec·C2F 2m 03.1 — Identifying two methods of producing drinking water
Spec·C2F 1m 🖨️03.3 — Completing the bar chart for dissolved ion data
Spec·C2F 1m 03.4 — Identifying which question science alone can't answer
Spec·C2F 2m 03.5 — Giving two reasons why
Spec·C2F 1m 03.6 — Identifying the correct % daily-fluoride calculation
Spec·C2F 2m 03.7 — Describing the no-fluoride tooth decay pattern, using data
Spec·C2F 2m 03.8 — Describing the effect of fluoride across age groups
Nov21·C2F 1m 01.7 — Identifying the easiest water type for potable water
Nov21·C2F 1m 01.8 — Identifying the first stage of waste water treatment
Jun22·C2F 6m 07.1 — Comparing ease of obtaining potable water from waste vs ground water
Jun25·C2F 1m 04.2 — Explaining why waste water passes through metal grids
Nov21·C2F 1m 05.6 — Identifying the correct order of LCA stages
Jun22·C2F 3m 05.9 — Giving three advantages of wood over plastic, using LCA data
Jun24·C2F 4m 05.3 — Evaluating the sustainability of wood vs steel disposal (5.10.2.2 noted)
Jun18·C2F 1m 06.7 — Explaining why LCAs are done
Jun18·C2F 4m 06.8 — Comparing two disposal methods, using table data (5.10.2.2, 5.9.2.2 noted)
Spec·C2F 6m 06.4 — Evaluating the plastic-vs-paper bag statement, using LCA data (5.10.1.1 noted)
Nov20·C2F 1m 01.7 — Calculating the decrease in plastic bags used
Nov21·C2F 3m 05.2 — Calculating energy saved from recycling copper
Nov21·C2F 2m 05.5 — Matching description to name of process (extraction/quarrying/recycling)
Jun23·C2F 2m 02.9 — Naming the two waste-reduction methods shown
Jun24·C2F 2m 05.1 — Calculating the mass of aluminium recycled (5.10.2.1 noted)
Jun24·C2F 4m 05.2 — Calculating the number of aluminium cans
Jun25·C2F 2m 04.5 — Completing the sentences on reusing and recycling
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