phys chem science speech 1

Download Phys chem science speech 1

Post on 06-May-2015

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  • 1.By Ramses Rodriguez VI A

2. Objective:

  • Be able to distinguish between a physical and chemical change.
  • In a Funny Way!

3. Matter

  • Matter is everywhere.
  • Matter is anything that takes upspaceand hasmass .
  • Matter is constantly experiencing bothchemicalandphysical changes .

4. Physical Change

  • Physical changesoccur when matter changes its property but not its chemical nature.
  • Physical property changescould include a change in:texture ,shape ,size ,color ,odor ,volume ,mass ,weight , anddensity .

5. Physical Change 6. Chemical Change

  • Chemical changesare changes matter undergoes when itbecomes new or different matter .
  • To identify a chemical changelookfor signs such ascolor change ,bubbling and fizzing ,light production ,smoke , andpresence of heat .

7. Chemical Change

  • A chemical change occurs when fireworks are used.Fireworks are made of metals such as magnesium and copper.These change chemically as theylight up the sky .

8. Now lets Play! 9. Is it a chemical or physical change?

  • Sugar dissolving in tea
  • Chemical Change
  • Physical Change

10. Did it change size, color, shape (Physical Change)? or Did it become different matter (Chemical Change)? 11. 12. Is it a chemical or physical change?

  • Logs burning
  • Chemical Change
  • Physical Change

13. Did it change size, color, shape (Physical Change)? or Did it become different matter (Chemical Change)? 14. 15. Is it a chemical or physical change?

  • Breaking water up by separating it into hydrogen and oxygen
  • Chemical Change
  • Physical Change

16. Did it change size, color, shape (Physical Change)? or Did it become different matter (Chemical Change)? 17. 18. Now a Demostration! 19.

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