5.0Unit 5. Transition Metals and Organic Nitrogen Chemistry
Overview: Transition Metals and Organic Nitrogen Chemistry — IAL Edexcel Modular (Chemistry) Revision Notes & Topical Questions
5 min read 7 parts Lesson 1 of 8 Unit quiz
Lesson summary
Unit 5 IAL Modular Chemistry notes: x 10-3 mol dm-3 - calculate the atom economy of a reaction - construct and/or balance equations using ratios - evaluate the effect of changing experimental parameters on measurable values, e.g.
- Halogen displacement
- Unit 5 IAL Modular Chemistry: what to do next
- Unit 5 IAL Modular Chemistry: revision checklist
- Alkali metals
- Alkaline earth metals
- Noble gases
Section 1 of 7Process & sequence
Flame tests
Li – red
Na – yellow
K – lilac
Ca – brick red
Cu – blue-green
- Group 1 metal
- + water
- → hydroxide
- + hydrogen
Section 2 of 7Keep going
Unit 5 IAL Modular Chemistry: what to do next
These Unit 5 IAL Modular Chemistry notes covered the key ideas, worked examples and exam technique for this topic. Check your Unit 5 IAL Modular Chemistry understanding with the practice questions below, then reread any Unit 5 IAL Modular Chemistry point you were unsure about before moving on.
Unit 5 IAL Modular Chemistry: revision checklist
- Revise the main Unit 5 IAL Modular Chemistry definitions until you can write them from memory.
1
Previous lesson: 4.8 Organic Analytical Techniques — Notes — IAL Chemistry Notes
2
Next lesson: 5.1 Redox Equilibria — Notes — IAL Chemistry Notes
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Official syllabus: Pearson Edexcel International A Levels
Section 3 of 7Compare
| Group | Elements | Reactivity trend | Typical ion | Property | Use |
|---|---|---|---|---|---|
| 1 Alkali metals | Li, Na, K | Increases down | +1 | React with water → hydroxide + H₂ | Na lamps |
| 2 Alkaline earth | Mg, Ca, Ba | Increases down | +2 | Less reactive than group 1 | Ca in bones |
| Transition metals | Fe, Cu, Zn | Variable | Various | Coloured compounds, catalysts | Fe in Haber |
| 17 Halogens | F, Cl, Br, I | Decreases down | −1 | Displacement reactions | Cl₂ water treatment |
| 18 Noble gases | He, Ne, Ar | Unreactive | None | Full outer shell | Balloons, lighting |
Section 4 of 7Key terms
Section 5 of 7Syllabus checklist
Syllabus points
x 10-3 mol dm−3 - calculate the atom economy of a reaction - construct and/or balance equations using ratios - evaluate the effect of changing experimental parameters on measurable values, e.g. how the value of Kc would change with temperature given different specified conditions - carry out calculations using the Avogadro constant - carry out pH and pKa calculations - make appropriate mathematical approximations in buffer calculations significant figures (iii) B.2.1 B.2.2 of significant figures given raw data quoted to varying numbers of significant figures - understand that calculated results can only be reported to the limits of the least accurate measurement Candidates may be tested on their ability to:
- calculate weighted means, e.g. calculation of an atomic mass based on supplied isotopic abundances
- select appropriate titration data (i.e. identification of outliers) in order to calculate mean titres Candidates may be tested on their ability to: determine uncertainty when two burette readings are used to calculate a titre value calculations, e.g
calculate a rate constant k from a rate equation Candidates may be tested on their ability to:
- carry out structured and unstructured mole calculations
- carry out rate calculations
- calculate the value of an equilibrium constant KC Candidates may be tested on their ability to:
- carry out Hess's law calculations
- calculate a rate constant k from a rate equation Candidates may be tested on their ability to:
- carry out pH and pKa calculations (iv)
- interpret and analyse spectra
- determine the order of a reaction from a graph
- derive rate expression from a graph
- plot concentration-time graphs from collected or supplied data and draw an appropriate best-fit curve
- calculate the rate constant of a zeroorder reaction by determination of the gradient of a concentration-time graph
- determine the order of a reaction using the initial rates method
Section 6 of 7Command terms
Command terms
Give / State / Name
Recall a fact; one idea per mark.
Define
Give the exact meaning using the specification keywords.
Describe
Give an account of what happens / the pattern in data, quoting values; no reasons needed.
Explain
Give reasons with linked statements (cause → effect). Each linked step is usually a separate marking point.
Suggest
Use knowledge in a new context; more than one answer may be accepted.
Compare
Similarities and differences; each point must refer to both items.
Calculate
Show working; include units; check significant figures. Method marks are given even if the final answer is wrong.
Discuss
Explore the issue from different angles and link the points.
Evaluate / Assess
Weigh strengths and weaknesses and reach a supported judgement.
Deduce
Draw a conclusion from the information given.
Justify
Support a statement/choice with evidence.
Section 7 of 7Exam technique
Keywords the mark scheme looks for in this lesson
Keywords the mark scheme looks for in this lesson
Alkali metals · Alkaline earth metals · Halogens · Noble gases · Transition metals · Complex ion · Ligand · Flame test
Learn each definition in the Key words tab exactly; a missing keyword in a definition usually loses the mark.
How to get full marks (examiner guidance)
How to get full marks (examiner guidance)
Use specification keywords exactly (e.g. electronegativity, nucleophile, dynamic equilibrium, activation energy).
Link ideas
Link ideas for “explain” each marking point is usually a cause → consequence step; unlinked facts often score nothing.
Use the information in the question
“discuss/evaluate” answers must use the data provided and match the number of marks.
Convert units carefully (mg → g, cm³ → dm³) and show working for calculations.
Avoid vague words
“it”, “stuff”, “things”, “goes up”, “energy is made”. Name the substance and the process.
Do not extrapolate a graph line beyond the data or to zero unless asked.
Six-mark extended responses are marked on content AND a logical, linked line of reasoning.
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