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Keynote; ch. 2; nature of matter


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The Nature of Matter, Conservation of Matter, Thermochemistry,

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Keynote; ch. 2; nature of matter

  1. 1. All matter is Made of the same Reoccurring Elements called Atoms
  2. 2. All matter is Made of the same Reoccurring Elements called Atoms
  3. 3. Each Element has its own Unique Physical and Chemical Properties
  4. 4. Matter is made of one or More of these Elements (atoms) Combined Together
  5. 5. Two or More Types of Elements Chemically Bonded Together is Called a Compound.
  6. 6. Compounds have Properties that are Different from their Individual Elements
  7. 7. Mixtures are Combinations of matter not chemically combined Heterogeneous (many different_) Homogeneous (all the same) Separating Colloids Suspensions Solutions
  8. 8. Physical Properties of Matter Density Melting point Freezing point Texture Color Flexibility
  9. 9. Chemical Properties of Matter Cannot be observed without a chemical reaction Change in: Flammability, Color, Temperature Ability to Chemically React Forms new substances with new properties
  10. 10. Chemical Reactions In a chemical reaction the molecules are rearranged into different combinations of atoms.
  11. 11. Ingredients of Reactions Reactants and Products...
  12. 12. Universal Law of Conservation of Matter... In a Chemical Reaction Matter is neither created or destroyed The Number and type of Atoms, and hence the mass, remains the Same But the Physical and Chemical Properties May change
  13. 13. Thermochemistry... A Chemical Reaction will be either Exothermic (the reactants have more energy than the products; heat is given off) or endothermic (the reactants have less energy than the products; heat is absorbed)
  14. 14. Identify the Reaction...
  15. 15. Identify the Reaction...