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Chemical Reactions SB

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Chemical Reactions

Chemical Reactions

Published in: Technology, Education

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Transcript

  • 1. Elements, Atoms, Compounds and Molecules
    By Samantha Bennett
  • 2.
  • 3. What is an atom?
    An atom is fundamental piece of matter which it is made up of protons, neutrons and electrons
  • 4. What is an element
    An element is a pure substance made up of one type of atom.
  • 5. Metals
    Metal is an element, compound, or alloy that conducts heat and electricity.
    Copper
  • 6. Non metals
    A non-metal is an element on the periodic table that does not have the properties of a metal element such as malleability. Non metals are usually found as gases in nature or weak, brittle solids.
    Phosphorus
  • 7. Compounds
    A chemical compound is a pure chemical substance consisting of two or more different chemical elements.
  • 8. Chemical reaction
    A chemical reaction is a process that leads to the transformation of one set of chemicals substances to another.
  • 9. Identifying chemical reactions
    Heat and light gas or precipitate
  • 10. A physical change is reversible, a chemical change is not. For example, the freezing of water would be a physical change because it can be reversed, whereas the burning of wood is a chemical change - you can't 'unburn' it
    Chemical and physical reactions
  • 11. Factors affecting a reaction rate?
    Temperature, concentration, size of particles or using a catalyist
  • 12. Bibliography
    http://www.qrg.northwestern.edu/projects/vss/docs/Propulsion/1-what-is-an-atom.html
    http://www.ncbi.nlm.nih.gov/pccompound
    http://web.jjay.cuny.edu/~acarpi/NSC/6-react.htm
    http://en.wikipedia.org/wiki/Wiki

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