1. Alkali metals Group 1 Lithium reactive Alkane Hydrocarbon Methane Single bond Alkene Hydrocarbon Methene Double bond Alloy Mixture Metal steel Aluminium Metal Low density aircraft Atmosphere Gases Earth Atom Element Tiny Electron Atomic number Periodic table Atom Atomic nucleus Positive Middle Centre Biodegradable Cornstarch Breaks down Bioleaching Ores Microbes Blast furnace Iron Extraction Ore

2. Calcium carbonate Limestone CaCO 3 Calcium oxide Limestone Thermal decomposition Carbon cycle Carbon dioxide Photosynthesis Combustion Carbon steel Alloy Iron Cast iron Impure Blast furnance Combustion Fossil fuel Burning wood Concrete Cement Sand aggregate Condense Liquid Gas vapour Covalent bond Sharing Electrons Non metals Cracking Breaking down Hydrocarbons catalyst Distillation Seperation Mixture Boiling point Displace Reactivity carbon

3. Electrolysis Ions Electricity breakdown Electron Negative Small Atom Electronic structure Electron shells Emulsifier Mixture Layers Dissolve Fermentation Beer Ethanol yeast Fossil fuel Coal Oil Gas Fractional distillation Separate Boiling point Global Dimming Soot Carbon Particulates Global warming Temperature Earth Sea Hardening Plant oils Margarine Hydrogen Hydration Adding Water Hydrocarbon Hydrogen Carbon

4. Hydrophilic Water loving Hydrophobic Water hating Ion Atom Charged electron Ionic bond Positive Negative ions Limewater Carbon dioxide Cloudy Calcium hydroxide Mantle Crust Core Earth Mixture Element compound reaction Molecule Atom bond Monomer Small Reactive Polymer Ore Rock Metal Oxidised Adding Oxygen Phytomining Extraction Ores Plants

5. Photosynthesis Plants Carbon dioxide food Polymer Large molecule Many Monomer Reactant Chemical Reaction Start Reactivity series Order Reactivity Elements Reduction Removing Oxygen Saturated hydrocarbon Alkane hydrogen Smart Polymer Change environment Smelting Ore Heating Metal Tectonic plates Crust Rock Volcano Thermal decomposition Breakdown Heat Unsaturated oil Plant Double Bond Viscosity Liquid Runny Thickness

6. A