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Identifying substance_a_1

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Identifying substance_a_1

  1. 1. Identifying Substances! By: Kasey Nelson & Amanda Bobbitt
  2. 2. Density! <ul><li>Density is a physical property of matter.
  3. 3. Density Is the mass per unit volume of a material!
  4. 4. The formula for calculating density is Density=mass
  5. 5. volume </li></ul>
  6. 6. Melting Point and Boiling Point! <ul><li>Phase, or state, is a physical property of matter. On earth, most matter exists in three phases: Solid, liquid, and gas!
  7. 7. Matter can change phase if it absorbs or releases energy! </li></ul><ul><li>Most often, the energy absorbed or released is thermal energy, or heat!:p d: </li></ul>
  8. 8. :)(:Specific Heat!:)(: <ul><li>The specific heat of a substance is the amount of heat needed to raise one gram of a substance by one degree Celsius.
  9. 9. The unit of specific heat is joules per gram per degree Celsius.
  10. 10. Specific heat values can be used to compare how different substances absorb heat. </li></ul>
  11. 11. :)(:Solubility:)(: <ul><li>Solubility is another physical property that can be used to identify a substance.
  12. 12. Solubility is a measure of how much of a substance dissolves in a given amount of another substance.
  13. 13. Sugar is soluble(or able to dissolve) in water.
  14. 14. When sugar dissolves in water, the two materials form a solution. A solution is a mixture in which the particles are too small to be distinguished from each other. </li></ul>
  15. 15. Other properties used to identify substances:)pd(: <ul><li>Not all properties of substances are physical properties.
  16. 16. Matter also has chemical properties.
  17. 17. A chemical property is a characteristic that describes how the matter will change under certain conditions. One chemical property of matter is reactivity.
  18. 18. Reactivity describes how likely an element is to form bonds with other elements. </li></ul>
  19. 19. Thank you!

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