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Matter as a Black Box

Matter as a Black Box

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Matter as a Black Box

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  1. Matter as a Black Box • Matter- anything that… • Has mass (resists changes in motion) • Has volume (takes up space) • Energy- anything that… • Changes matter (moves it) (Kinetic Energy) • Stores up energy to move later (Potential energy)

  2. The Balloon Test • A way to decide if you are dealing with matter or energy. Ask yourself… • Can I fill a balloon with it? • If yes it is matter • If no it is not

  3. The energy test … potential or kinetic?Ask yourself…what, if anything, is moving.

  4. Matter and Energy Observations

  5. Matter and Energy Observations

  6. Observations of Matter and Energy

  7. Observations of Matter and Energy

  8. Matter and Energy Observations

  9. The Kinetic Molecular Theory • Kinetic – refers to the energy of motion • Molecular – referring to molecules or groups of atoms bonded together • Theory – an explanation of observations http://www.media.pearson.com.au/schools/cw/au_sch_whalley_sf1_1/int/2_slg.html

  10. All matter is made of particles

  11. Particles are in constant, random motion http://www.chem.purdue.edu/gchelp/atoms/states.html

  12. Motion increases with increased energy (heat)

  13. Attractive forces between particles hold matter together

  14. Strength of attractive forces varies Iron water oxygen

  15. More cool observations about matter…. Take out loose-leaf. Put a full heading on the top. Call this “Two More Observations of Matter”

  16. On the paper predict what will happen if we hit this meter stick with a hammer. Don’t forget a rationale.

  17. Now predict what will happen if we heat this can and then suddenly cool it in an ice water bath?

  18. Matter and Energy Observations • Matter sometimes floats • In air • In water