# Tutorials

*For videos that cover example exam questions, click on the links below. Note that the headings of the PowerPoints in the videos refer to the old syllabus but the videos are still relevant for the new syllabus (first exams 2025)*

### Tutorial 1

* [Tutorial](/mystuff/hl/chemistry/msjchem/tutorials.md) 1.1
  * These multiple choice questions cover the mole concept, changes of state and molar ratios
* [Tutorial](https://www.msjchem.com/uploads/1/1/1/1/11113745/topic_1_multiple_364.mp4) 1.2
  * Multiple choice questions (sublimation, empirical and molecular formula and limiting reactant)
* [Tutorial](https://www.msjchem.com/uploads/1/1/1/1/11113745/topic_1_multiple_choice_examples_275.mp4) 1.3
  * This video covers percentage composition by mass, the mole concept and limiting reactant
* [Tutorial](https://www.msjchem.com/uploads/1/1/1/1/11113745/topic_1_exam_880.mp4) 1.4
  * Note that at 2:45, there is a slight error - 0.500 / 3 = 0.167, not 1.67
  * The following video covers limiting and excess reagents, and molar volume of a gas
* [Tutorial](https://www.msjchem.com/uploads/1/1/1/1/11113745/emp_and_mol_formula_832.mp4) 1.5
  * The following video covers calculating the empirical and molecular formula of a compound given the percentage by mass composition
* [Tutorial](https://www.msjchem.com/uploads/1/1/1/1/11113745/titration_q_664.mp4) 1.6
  * This question covers the calculations involved in a titration
* [Tutorial](https://www.msjchem.com/uploads/1/1/1/1/11113745/emp_form_717.mp4) 1.7
  * This video covers calculating the empirical formula of a compound from mass of CO2 and H2O formed in a combustion reaction
* [Tutorial](https://www.msjchem.com/uploads/1/1/1/1/11113745/icl_736.mp4) 1.8
  * This video covers mass to mole conversion, theoretical and percentage yield, enthalpy change and intermolecular forces

### Tutorial 2

* [Tutorial](https://www.msjchem.com/uploads/1/1/1/1/11113745/topic_2_multiple_choice_835.mp4) 2.1
  * Multiple choice questions that cover isotopes and the hydrogen emission spectrum
* [Tutorial](https://www.msjchem.com/uploads/1/1/1/1/11113745/topic_2_multiple_639.mp4) 2.2
  * Multiple choice questions (determining the number of protons and neutrons in the nucleus of an atom and writing electron configurations of ions)
* [Tutorial](https://www.msjchem.com/uploads/1/1/1/1/11113745/atomic_number_565.mp4) 2.3
  * This video covers atomic number and groups and periods in the periodic table. Note that the term electron configuration is now used instead of electron arrangement
* [Tutorial](https://www.msjchem.com/uploads/1/1/1/1/11113745/atomic_radius_330.mp4) 2.4
  * This video covers the trend in atomic radius across a period in the periodic table
* [Tutorial](https://www.msjchem.com/uploads/1/1/1/1/11113745/topic_2_502.mp4) 2.5
  * This video covers calculating the number of sub-atomic particles in an atom, drawing orbital diagrams and shapes of atomic orbitals
* [Tutorial](https://www.msjchem.com/uploads/1/1/1/1/11113745/ar_329.mp4) 2.6
  * This video covers calculating the relative atomic mass of magnesium
* [Tutorial](https://www.msjchem.com/uploads/1/1/1/1/11113745/topic_12_343.mp4) 2.7 + [Tutorial](https://www.msjchem.com/uploads/1/1/1/1/11113745/ie_688.mp4) 2.8
  * These videos cover successive ionisation energies

### Tutorial 3

* TBC


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