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Topic : Matter Aim : Describe the different properties and changes of matter.

Topic : Matter Aim : Describe the different properties and changes of matter. Do Now : ON NOTES SHEET HW : Atom Picture due tomorrow!. Physical Property. Property that does not change the identity of that matter Ex:. 1. Color 2. Odor 3. Phase at room temp 4. Density 5. Solubility.

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Topic : Matter Aim : Describe the different properties and changes of matter.

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  1. Topic: Matter Aim: Describe the different properties and changes of matter. Do Now: ON NOTES SHEET HW: Atom Picture due tomorrow!

  2. Physical Property • Property that does not change the identity of that matter • Ex:

  3. 1. Color 2. Odor 3. Phase at room temp 4. Density 5. Solubility

  4. 6. Heat conductivity 7. Electrical conductivity 8. Hardness

  5. 9. Boiling and freezing points 10. Texture 11. Shape

  6. Nitrogen dioxide • brownish-red gas at room temperature • poisonous gas. • melting point of -9.3 C • boiling point of at 21 C. • density is 3.3 grams/liter. • Sulfur • yellow solid (rhombic sulfur) • melting point of 112.8 C • boiling point of 444.6 C. • Mercury • silvery, heavy, moveable liquid • melting point is -38 C • boiling point is 356 C • very high density at 13.5 g/cm3

  7. Chemical Properties Describes how a substance changes into a new substance Ex: Flammability: ability to burn

  8. Ability to support burning (ex.- oxygen) • Ability of a metal to react with an acid http://www.youtube.com/watch?v=afxwDTz_JTk&feature=related A glowing wooden splint placed in a test tube will continue to burn until the O2 is used up.

  9. Physical Changes A change in a physical property keeps its chemical composition and properties

  10. An example of a physical change occurs when making a baseball bat. Wood is carefully crafted into a shape which will allow a batter to best apply force on the ball. Even though the wood has changed shape and therefore physical properties, the chemical nature of the wood has not been altered. The bat and the original piece of wood are still the same chemical substance.

  11. Ex: Phase changes Tearing Crushing

  12. Chemical Changes Substances react to form new substances Observe changes in color, bubbling, light production, smoke, presence of heat, etc…

  13. Ex: • burning of wood • cooking of an egg • rusting of iron • souring of milk

  14. Chemical changes are changes substances undergo when they become new or different substances. For example, the fireworks we see on the 4th of July are actually metals such as magnesium and copper that change chemically as they light up the night skies with their fantastic colors.

  15. Let’s summarize… What are some of the physical properties of matter? Explain what happens to a substances when a physical change occurs. What are some of the chemical properties of matter? Explain what happens to a substances when a chemical change occurs.

  16. Review http://www.teacherbridge.org/public/bhs/teachers/Dana/chemphys.html

  17. An example of a chemical change is 1) evaporation 2) condensation 3) burning 4) freezing

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