Chemistry

Explore chemical equations, structures, particle diagrams, cells, laboratory setups, giant lattices, and Chemistry graphs.

Primary Secondary

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Hoppy Gold Quiz Collection

Choose a topic, then open the printable quiz or practise interactively in Hoppy.

Structure, Bonding and the Atom

English 10 questions

Atomic structure, ionic and covalent bonding, intermolecular forces, and material properties.

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Equilibrium, Rates and Gas Calculations

English 10 questions

Gas calculations, reaction rates, dynamic equilibrium, and equilibrium constants.

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Metals: Corrosion, Reactivity and Extraction

English 10 questions

Corrosion protection, metal reactivity, redox reactions, extraction, and recycling.

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Chemical Equation

Render chemical equations with proper subscripts, superscripts, and reaction arrows. Perfect for chemistry questions involving reactions, balancing equations, and stoichiometry.

Examples

Combustion Reaction Example

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Dot-and-Cross Diagrams

Show bonding and electron transfer for covalent molecules and ionic compounds.

Examples

Hydrogen (H₂)

Hydrogen chloride (HCl)

Water (H₂O)

Methane (CH₄)

Oxygen (O₂)

Nitrogen (N₂)

Carbon dioxide (CO₂)

Sodium chloride — ionic

Magnesium oxide — ionic

Sodium oxide — ionic

Magnesium chloride — ionic

Ammonia (NH₃)

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Giant Lattices

Compare ionic, giant covalent, and metallic structures, including layers and delocalised electrons.

Examples

Sodium chloride lattice

Graphite layers and delocalised electrons

Metallic structure and delocalised electrons

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Organic and Polymer Structures

Display structural formulae, substituents, monomers, polymers, and repeat units in a consistent question-ready format.

Examples

1-chloro-4-methylbenzene

Aspirin derivative with chiral side chain

Condensed sodium alkyl sulphate chain

Propene monomer

Poly(propene) repeat unit

Poly(chloroethene) repeat unit

Styrene with phenyl ring

Poly(styrene) repeat unit

Expanded poly(propene) chain

Expanded poly(ethene) chain

Expanded poly(chloroethene) chain

Expanded poly(styrene) chain

Expanded PMMA chain

Displayed PET chain portion

Displayed Kevlar chain portion

Simple polyester linkage

PMMA repeat unit

PET repeat unit

Kevlar repeat unit

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Laboratory Setups

Present labelled apparatus diagrams for common experimental techniques and practical questions.

Examples

Filtration

Simple distillation

Titration

Gas collection over water

Heating a test tube

Calorimetry

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Electrochemical Cells

Build clear electrolysis, electroplating, and chemical-cell diagrams with electrodes, electrolytes, salt bridges, labels, and electron flow.

Examples

Concentrated sodium chloride electrolysis

Silver electroplating

Daniell chemical cell

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Chemistry GeoGebra Graphs

Render exam-ready Chemistry graphs with labelled axes, curves, guides, energy changes, and comparison cases.

Examples

Gas volume against time

Catalyst lowers activation energy

Dynamic equilibrium concentrations

Calorimetry cooling correction

Period 3 melting-point pattern

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