Core Science: Chemistry 1 – Higher (Y11) Keywords You need to know the definitions of the following words. They can be found on the iStudy page. Alkane Alkene Alkene test Alloy Atmosphere Base Butane Biofuels Carbon (soot) Carbon monoxide Complete combustion Calcium Carbonate Cracking Electrolysis Ethane Ethene Extracting metals Fractional Distillation Glass Hydrocarbon Hydrochloric Acid Igneous Incomplete combustion Polymerisation Landfill Propane Limestone Propene Limewater Properties Metamorphic Reactivity Series Methane Recycling Neutralisation Reduction Oxidised Saturated Pentane Sedimentary Pentene Thermal decomposition Polymer Unsaturated Balancing Equations Complete combustion Make sure the number of elements is the same for the products and reactants. Remember that compounds cannot be split up. Incomplete combustion Recycling Cracking The Rock Cycle It is important to know how each type of rock is formed as well as some examples of each rock type. Calcium carbonate is an important substance found in rocks. You should know its uses Breaking long chain hydrocarbons into short chain hydrocarbons Graphs Biofuels It is important to know the advantages of using biofuels over non-renewable fuels such as fossil fuels. Describe a graph - say what it shows, use numbers from the scale. Explain a graph – describe the graph and then give the reasons for what it shows.