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Chemical Reactions TG

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Chemical Reactions

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Chemical Reactions TG

  1. 1. ELEMENTS, Atoms, Compounds and Molecules<br />By Terry Gunning<br />
  2. 2. Elements<br />Elements are made up of atoms.<br />All the elements are listed on the periodic table.<br />Elements are purely one substance.<br />
  3. 3. Atoms<br />An atom is made of protons, neutrons and electrons.<br />Atoms make up elements.<br />The amount of protons, neutrons and electrons defines what element it is. <br />
  4. 4. Metals and Non Metals<br />A metal has high electrical and thermal conductivity. Metals are usually shiny, solid at room temperature, ductile and malleable. Metals normally have 1-3 electrons in their outer shell.<br />Non Metals are poor conductors of heat and electricity. They can be solid, liquid or gas at room temperature. Non metals have 4-8 electrons in their outer shell.<br />
  5. 5. Periodic Table<br />The periodic table shows all the elements and their atomic number.<br />
  6. 6. Compounds<br />A compound is a substance consisting of two or more different elements that can be separated by a chemical reaction. Water is a compound made up of two hydrogen and one oxygen atom. <br />
  7. 7. Chemical Reactions<br />A chemical reaction is when two or more elements interact and create a new compound.<br />Some chemical reactions are spontaneous and some are non-spontaneous needing input from some sort of energy (electricity, heat or light). <br />
  8. 8. Identifying Chemical Reactions<br />A chemical reaction is when two elements combine.<br />Some times a bye product can be created like a gas.<br />
  9. 9. Chemical and Physical Changes<br />A chemical change is when the substance is changed chemically like metal rusting.<br />A physical change is when a substance changes shape or form. <br />
  10. 10. Reaction Rate and Factors Affecting It <br />Reaction rate can be accelerated with heat and decreased in the cold. <br />
  11. 11. THE END<br />

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