Atom - The fundamental building block of all materials, consisting of protons, neutrons surrounded by a cloud of electrons, Compound - A sustance made up of two or more different atoms chemically joined, Electron - A samll negatively charged particle , Element - A substance made up of only one type of atom, Molecule - A cluster of atoms that makes up and element or a compound, Neutron - A particle with no electrical charge, Nucleus - A cluster of neutrons and protons at the centre of an atom, Proton - A positively charged particle in the nucleus, Hyrophobic - A surface that does not allow water to stick to it, Malignant - Rapidly growing dangerous cancerous cells, Anodising - A way of protecting aluminium from corrosion, Combustion - A rapid reaction with oxygen that releases energy in the form of heat or light, Endothermic - A chemical reaction that absorbs energy, Exothermic - A chemical reaction that releases energy, Conduction - A method of heat transfer, Condctor - A substance that allows heat to flow through it, Decibel (dB) - Unit used to measure loudness, Bacteria - Microscopic, single-celled organisms, Contagious - Very easy to spread, Immune system - The system in your body that fights infection, Pathogen - An organism that causes disease, Abiotic factor - A non-living factor of the environment, Biotic factor - A living factor of the environment, Commensalism - Relationship between two organisms, where one benefits and the other is unharmed, Community - All living organisms in an ecosystem, Biodiversity - The range of different species in a community, Food chain - A sequence of organisms feeding on each other, Food Web - All the linked food chains in an ecosystem, Producers - Organisms that make food for the community,

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