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TCE Chemistry (CHM415115) information sheet: data, formulae, ions and potentials

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Formula sheet

The card below opens today's Year 12 Chemistry paper with the sheet in a drawer, including a periodic table. The constants, unit prefixes and formulae follow in our own layout, and the long data tables are listed below instead of copied. The full sheet is on the TASC Chemistry page.

Formula sheet

Year 12 Chemistry

Open formula sheet

Chemical data and constants

QuantityApproximate value
Standard atmospheric pressure1.000 atm = 101.3 kPa = 760.0 mm Hg
Absolute zero temperature (zero kelvin)−273 °C
Standard temperature and pressure (STP)0 °C (273 K) and 101.3 kPa
Standard laboratory conditions (SLC)25 °C (298 K) and 101.3 kPa
Avogadro's constant (NA)6.022 × 10²³ mol⁻¹
Ideal gas constant (R)0.0821 L atm K⁻¹ mol⁻¹; 8.31 J K⁻¹ mol⁻¹; 8.31 L kPa K⁻¹ mol⁻¹; 62.4 L mm Hg K⁻¹ mol⁻¹
Molar volume of an ideal gas (STP)22.4 L mol⁻¹
Molar volume of an ideal gas (SLC)24.5 L mol⁻¹
Charge on the electron−1.602 × 10⁻¹⁹ C
Faraday's constant (F)96 500 C mol⁻¹
Specific heat of water (cw)4.184 J g⁻¹ K⁻¹
Density of liquid water1.00 g mL⁻¹
One litre (1.00 L)1000 mL or 1000 cm³
One cubic metre (1.00 m³)1000 L

Unit prefixes

nano (n)micro (μ)milli (m)kilo (k)mega (M)giga (G)tera (T)
10⁻⁹10⁻⁶10⁻³10³10⁶10⁹10¹²

Chemical information

n=\frac{m}{M}amount of substance from mass
N=nN_Anumber of particles
c=\frac{n}{V}concentration
\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}combined gas equation, n constant
PV=nRTideal gas equation
n\left(e^-\right)=\frac{q}{F}=\frac{It}{F}amount of electrons
E=mc\Delta Tenergy change from heating
E=VItelectrical energy
C_f=\frac{VIt}{\Delta T}calibration factor from electrical energy
C_f=\frac{E}{\Delta T}calibration factor from energy
\rho=\frac{m}{V}density

The other data on the sheet

  • Common positive and negative ions with their symbols and charges, such as hydrogen, lithium, silver, copper(II), iron(III) and zinc, and bromide, chloride, hydroxide, oxide and sulfide.
  • A solubility table for some ionic compounds, by anion.
  • Common coloured aqueous ions, coloured cations and anions.
  • Organic naming: stem names, side chains and substituents, and prefixes.
  • Aliphatic functional groups and some organic reactions of aliphatic compounds.
  • Frequencies of important infrared stretching vibrations.
  • Standard reduction potentials for aqueous ions at 1 mol L⁻¹ and 25 °C, set out with the strongest oxidisers at the top.
  • A table of relative atomic masses.

How the exam works with the sheet

TASC's external assessment specifications for Chemistry set a written exam of three hours, with an extra 15 minutes of preparation time. They list a TASC-approved calculator and the current year's External Exam Information Sheet as approved materials. The exam has four sections, each with five to seven compulsory questions, worth 45 marks and about 45 minutes:

SectionMarksCourse content
A45Fundamental principles and theories of electrochemistry
B45Thermochemistry, kinetics and equilibrium
C45Properties and reactions of organic and inorganic matter
D45Quantitative chemical problems

Compare the SACE Chemistry sheet guide, the QCE Chemistry booklet guide and the WACE Chemistry booklet guide.

What is not on the TASC Chemistry information sheet

  • Equilibrium expressions. No K, Q or Ksp expression, and no pH or pKa formulas.
  • Rate laws. Nothing on rate equations, orders of reaction or the Arrhenius equation.
  • Enthalpy per mole. E = mcΔT is given, but ΔH = −E ÷ n and the sign are not.
  • The Nernst equation and cell potential rule. The potentials are listed, but not how to combine them.
  • Mass spectrometry and NMR data. Only infrared frequencies are listed.
  • The mole ratio method. You build it from n = m/M and the equation.

How to use the sheet in the exam

  1. In preparation time, find the page for reduction potentials and the solubility table, which most questions use.
  2. Pick the value of R to match your units: 8.31 L kPa K⁻¹ mol⁻¹ for litres and kilopascals.
  3. Write the equation, then the substitution with units, and use the relative atomic masses on the sheet.
  4. For electrochemistry, use the potentials table for the half-reactions and the Faraday line for amounts.

Example 1: the ideal gas equation

What volume does 0.500 mol of an ideal gas occupy at 298 K and 101.3 kPa? Using R = 8.31 L kPa K⁻¹ mol⁻¹:

V=\frac{nRT}{P}=\frac{0.500\times8.31\times298}{101.3}=12.2\ \text{L}

That agrees with half of the SLC molar volume, 24.5 ÷ 2 = 12.25 L, which is a useful check.

Example 2: electrolysis

A current of 2.00 A flows for 30.0 minutes through a copper(II) sulfate solution. The Faraday line gives the moles of electrons, and the half-equation Cu²⁺ + 2e⁻ → Cu gives the moles of copper:

n\left(e^-\right)=\frac{It}{F}=\frac{2.00\times1800}{96500}=0.0373\ \text{mol},\quad n(Cu)=0.01865\ \text{mol},\quad m=0.01865\times63.55=1.19\ \text{g}

Convert the time to seconds first. The sheet's relative atomic mass table gives 63.55 for copper.

Example 3: calorimetry

A reaction warms 200 g of water by 5.5 K. With cw = 4.184 J g⁻¹ K⁻¹, the heating formula gives:

E=mc\Delta T=200\times4.184\times5.5=4602\ \text{J}

That is 4.60 kJ. To find the enthalpy change per mole, divide by the moles of reactant and give the reaction a negative sign if the water warmed. Revise rate and energy ideas in the Reaction Kinetics course.

Practise with the sheet open

Our Year 12 Chemistry daily paper is a short timed paper of 8 questions worth 25 to 35 marks. It is not a TASC paper. Sit it as a short mock with the sheet in the drawer. Year 11 Chemistry covers earlier topics.

Exam answers

The answers and a worked mark scheme come with today's paper once it is marked. They show which line of the sheet each question wanted. We do not publish official answers, past paper answers or leaked papers.

Common questions

Do you get a data sheet in TCE Chemistry?
Yes. TASC lists the current year's External Exam Information Sheet for Chemistry as approved material.
How long is the TCE Chemistry exam?
Three hours, plus 15 minutes of preparation time.
Does the sheet give standard reduction potentials?
Yes, for aqueous ions at 1 mol L⁻¹ and 25 °C.
What value of R does the sheet give?
Four: 0.0821 L atm, 8.31 J, 8.31 L kPa and 62.4 L mm Hg, each per kelvin per mole.
How many sections are in the exam?
Four sections of 45 marks each.

Revision cards

Say the answer first, then flip the card to check it.

Where to go next

  • Solve it

    Moles Calculator

    Convert between grams, moles and particles

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    Rates, catalysts and collision theory: what makes reactions fast or slow

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  • Test it

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    Start today's paper
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