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