Chemical Reactions EL
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Chemical Reactions

Chemical Reactions

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Chemical Reactions EL Presentation Transcript

  • 1. Elements, Atoms, Compounds and Molecules
  • 2. Atom
    An atom is a fundamental piece of matter. Atoms are made up of protons, neutrons and electrons.
    Electrons
    Neutrons
    Nucleus
    Protons
  • 3. Element
    An element is a substance that is entirely made up of one type of atom.
  • 4. Metal
    A metal is an element, compound or alloy that conducts electricity and heat. Metals are malleable and ductile.
    Copper
  • 5. Non-Metal
    A non-metal is an element in 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.
    Sulphur
  • 6. The Periodic Table
    The Periodic Table is a tabular display of the chemical elements.
  • 7. What is a Compound
    A chemical compound is a pure chemical substance consisting of two or more different chemical elements.
  • 8. What is a chemical reaction?
    A chemical reaction is a process that leads to the transformation of one set of chemicals substances to another.
  • 9. What is the difference between a chemical and physical reaction?
    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 because you can’t reverse it.
  • 10. Identifying Chemical reactions
    Heat, light, gas or precipitate
  • 11. What factors affect a reaction rate?
    Temperature, concentration, size of particles or using a catalyst.
  • 12. Bibliography
    http://www.qrg.northwestern.edu/projects/vss/docs/Propulsion/1-what-is-an-atom.html
    http://education.jlab.org/qa/element.html
    http://en.wikipedia.org/wiki/Periodic_table