C2 glossary terms 0.0 / 5 ? ChemistryAll c2GCSEOCR Created by: LavleenGillCreated on: 15-04-17 15:25 Mantle Molten layer of the earth between the core and crust. 1 of 35 Continental plate Less dense plates which hold the continents 2 of 35 Oceanic plate More dense plates which hold the oceans 3 of 35 Lithosphere Outer layer of the Earth which is made of the crust and the part of the mantle that lies underneath. 4 of 35 Convection currents Movement in the mantle caused by heat. This movement causes the tectonic plates on the crust to move. 5 of 35 Subduction When an oceanic plate collides with a continental plate and the more dense oceanic plate sinks below the continental plate. 6 of 35 Igneous rock Type of rock form as magma cools 7 of 35 Reinforced concrete Concrete with steel rods or steel meshes running through it 8 of 35 Electrolysis Using electricity to separate a substance 9 of 35 Anode Positive charge 10 of 35 Cathode Negative charge 11 of 35 Oxidation Type of chemical reaction where electrons are LOST 12 of 35 Reduction Type of chemical reaction where electrons are GAINED 13 of 35 Electrolyte The liquid in which electrolysis takes place 14 of 35 Alloy A mixture of a metal element with another element 15 of 35 Smart alloy Special alloy which has a 'shape memory' 16 of 35 Brass An alloy of copper and zinc 17 of 35 Solder An alloy of lead and tin 18 of 35 Amalgam An alloy containing mercury 19 of 35 Rust A chemical reaction between iron, oxygen and water 20 of 35 Corrosion When a metal reacts with oxygen and water 21 of 35 Hydrated iron (III) oxide The chemical name for rust 22 of 35 Haber process A chemical reaction which makes ammonia 23 of 35 Catalyst A substance you add to a reaction to speed up 24 of 35 Optimum The best conditions 25 of 35 Recycling System Sends unreacted gases back into the reaction vessel 26 of 35 Yield How much you produce in a chemical reaction 27 of 35 Acid A substance with a pH below 7 28 of 35 Base A substance with a pH above 7 29 of 35 Alkali A soluble base 30 of 35 Indicators Substances which change colour when pH changes 31 of 35 Fertilisers Contain essential elements to increase plant growth 32 of 35 Eutrophication When water ways become too rich with nutrients (from fertilisers) which allows algae to grow wildly and use up all of the oxygen 33 of 35 Nitrogen fertiliser A fertiliser that contains nitrogen 34 of 35 Essential elements Three elements: nitrogen, potassium and phosphorous that are essential for the growth of plants 35 of 35
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