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Ionic and Covalent Bonding Explained
How to explain ionic and covalent bonding for SPM Chemistry, with worked electron-arrangement examples for NaCl, MgO, water and carbon dioxide.
2026-09-04Study GuidesIsotopes and Relative Atomic Mass
A clear SPM explanation of what isotopes are, why relative atomic masses are not whole numbers, and how to calculate them from isotopic abundances.
2026-09-04Study GuidesHow to Explain Natural and Synthetic Polymers
A clear, step-by-step way to explain natural and synthetic polymers for SPM Chemistry, with monomers, addition polymerisation and worked examples.
2026-09-04Study GuidesHow to Explain Natural Rubber and Vulcanisation
An SPM guide to latex, the coagulation of natural rubber, and how vulcanisation cross-links the chains with sulfur to make rubber harder and more elastic.
2026-09-04Study GuidesExplaining Oxidation and Reduction by Electrons
How to define oxidation and reduction in terms of electron transfer for SPM, with OIL RIG, oxidising and reducing agents, and clear worked examples.
2026-09-04Study GuidesHow to Explain Period 3 Across the Periodic Table
An SPM guide to Period 3 trends: valence electrons, atomic size, electronegativity, metal to non-metal, and the basic-to-acidic oxides, with the reasons.
2026-09-04Study GuidesHow to Explain Rusting and How to Prevent It
An SPM-ready explanation of rusting as a redox reaction, the two conditions needed, the equations, and every prevention method, barrier, sacrificial and alloy, with why each works.
2026-09-04Study GuidesHow to Explain Soaps and Detergents
An SPM guide to saponification, the hydrophilic-hydrophobic structure of cleaning molecules, their cleaning action, and why detergents win in hard water.
2026-09-04Study GuidesHow to Explain Strong and Weak Acids
An SPM guide to strong versus weak acids: complete and partial ionisation, why strength is not concentration, and how they differ in pH, conductivity and rate.
2026-09-04Study GuidesExplaining the Contact Process for Sulphuric Acid
A clear SPM walkthrough of the Contact Process: the four stages, the conditions for the reversible step, and why sulphur trioxide is not dissolved directly in water.
2026-09-04Study GuidesExplaining Concentration's Effect on Reaction Rate
A step-by-step SPM Chemistry guide to explaining why higher concentration speeds up a reaction, using collision theory and two worked examples.
2026-09-04Study GuidesExplaining Surface Area's Effect on Reaction Rate
An SPM Chemistry guide to explaining why a powder reacts faster than a lump, using collision theory, a worked marble-chip example and graph tips.
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