Elements, compounds and mixtures

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Elements, compounds and mixtures

  1. 1. Elements, Compounds and Mixtures Elements, Metals and Non-Metals
  2. 2. Objectives <ul><li>Identify elements as the building block of matter </li></ul><ul><li>Classify elements as metals and non-metals </li></ul><ul><li>State the uses of metals and non-metals </li></ul>
  3. 3. What are they? Gold Tin Copper Carbon Carbon
  4. 4. Elements <ul><li>Elements are the basic building block of matter. </li></ul><ul><li>There are about 117 known elements as of October 2006. </li></ul><ul><li>For online interactive information: www.chemicalelements.com </li></ul>
  5. 5. Metals and Non-Metals <ul><li>There are two main groups of elements: metals and non-metals </li></ul>Poor Conductors Good conductors Solids/Liquids/Gases Solids* Low Density High Density Dull Shiny Non-Metals Metals
  6. 6. Periodic Table <ul><li>The periodic table of elements is a table that shows all the known elements. </li></ul><ul><li>It list the elements in order of atomic masses and energy level of electrons. </li></ul><ul><li>It tells us metals from non-metals </li></ul>
  7. 8. Uses of Metals and Non-Metal <ul><li>Chemical Elements are represented by Symbol </li></ul>Oxygen Atomic Number Mass Number O 16 8
  8. 9. Conclusion <ul><li>Matter are made up of building blocks called elements . </li></ul><ul><li>Elements are divided into two groups: metals and non-metals . </li></ul><ul><li>Different properties metals and non-metal allow them to be used in different products. </li></ul><ul><li>Periodic Table tells us metals from non-metals as well as their reactivity. </li></ul>

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