matter as a black box
DESCRIPTION
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). The Balloon Test. - PowerPoint PPT PresentationTRANSCRIPT
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)
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
The energy test … potential or kinetic?Ask yourself…what, if anything, is moving.
Matter and Energy Observations
Matter and Energy Observations
Observations of Matter and Energy
Observations of Matter and Energy
Matter and Energy Observations
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
All matter is made of particles
Particles are in constant, random motion
http://www.chem.purdue.edu/gchelp/atoms/states.html
Motion increases with increased energy (heat)
Attractive forces between particles hold matter together
Strength of attractive forces varies
Iron water oxygen
More cool observations about matter….
Take out loose-leaf. Put a full heading on the top. Call this “Two
More Observations of Matter”
On the paper predict what will happen if we hit this meter stick with a hammer. Don’t forget a rationale.
Now predict what will happen if we heat this can and then suddenly cool it
in an ice water bath?
Matter and Energy Observations
• Matter sometimes floats – In air– In water