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Elements, Mixtures, Compounds and Molecules

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Elements, Mixtures, Compounds and Molecules

  1. 1. By Tim Maher
  2. 2.  A pure substance. About 110 different elements. All matter is made of one or more elements. They have specific properties.
  3. 3. Oxygen Copper Sulfur O Cu S Douglas, Kevin, 2008Properties Properties Properties-Color: colorless -Color: brown orange -Color: yellow-odorless -Bendy -stinky-flammable -metal -solid powder at room temp-gas at room temp -conducts electricity -solid at room temp
  4. 4. What is this?This is a mixture of elements. Why? Douglas, Kevin, 2008 Each element (substance) keeps its own properties. Because of that, they can be separated.
  5. 5. Each element (substance) keeps its own properties. Because of that, they can be separated. Douglas, Kevin, 2008Copper Oxygen Sulfur Cu O SProperties Properties Properties-Color: brown orange -Color: colorless -Color: yellow-Bendy -odorless -stinky-metal -flammable -solid powder at room-conducts electricity -gas at room temp temp-solid at room temp
  6. 6. Compound CuSO4 Does copper sulfate have the properties ofCopper sulfate has copper, sulfur andthe elements copper oxygen?(Cu), sulfur (S) andoxygen (O) bonded NOOOOO!!!!!together. Douglas, Kevin, 2008 Copper Sulfate Properties -Color: blue -brittle -not a metal -does not conduct electricity -solid at room temp -poisonous
  7. 7. Compound•A pure substance.•Made of 2 or more elements chemically.bonded together.•A compound has different properties thanthe elements that make it up.•NOT A MIXTURE!!!!!!!!!
  8. 8. MoleculeA molecule is formed when two or more atoms arechemically bonded together.All compounds are molecules but not all moleculesare compounds.
  9. 9. Compound, Molecule or Single Element? Na •Single element Why? •Na is the symbol for the element sodium (Na). Sodium cannot be broken down into any other chemical by physical or chemical means.
  10. 10. Compound, Molecule or Single Element?H 2O Molecule and compoundWhy? There are 2 hydrogen (H) atoms and 1 oxygen (O) atom chemically bonded together. 2 elements are bonded together.
  11. 11. Compound, Molecule or Single Element?H2 MoleculeWhy? There are 2 hydrogen (H) atoms chemically bonded together. Only one element is present.
  12. 12. Compound, Molecule or Single Element?CaCO3 Molecule and compoundWhy? There is 1 calcium (Ca) atom, 1 carbon (C) atom, and 3 oxygen (O) atoms chemically bonded together. 3 elements are bonded together.
  13. 13. Compound, Molecule or Single Element?O2 MoleculeWhy? There are 2 oxygen (O) atoms chemically bonded together. Only one element is present.
  14. 14. Compound, Molecule or Single Element?Mg Single elementWhy? Mg is the symbol for the element magnesium (Mg). Magnesium cannot be broken down into any other chemical by physical or chemical means.
  15. 15. Compound, Molecule or Single Element?F2 MoleculeWhy? There are 2 fluorine (F) atoms chemically bonded together. Only one element is present.
  16. 16. Compound, Molecule or Single Element?H2SO4 Molecule and compoundWhy? There are 2 hydrogen (H) atoms, 1 Sulfur(S) atom, and 4 oxygen (O) atoms chemically bonded together 3 elements are bonded together.
  17. 17. Bibliography–Davis, Raymond E. Modern Chemistry. Orlando, FL: Holt,Rinehart and Winston, 2009.Photos–Douglas, Kevin, 2008

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