Regarding volume, the question that separates solids, liquids, and gasses is whether or not the volume can be changed as the volume of the container changes. If you have water in a glass and pour it into a bowl, the amount of the water stays the same. If you have 4 yards of gravel in a truck, then you spread all that out to make a driveway, the volume is still 4 yards of gravel. The shape changed (from the shape of the truck to the shape of the driveway).
Wednesday, July 29, 2020
Ek = 1/2mv2where Ek is kinetic energy, m is mass and v is velocity.
Temperature is the average kinetic energy of the molecules in a sample.
But, since we can't see the particles speeding up or slowing down, we generally rely on the temperature to tell is what they are doing.
Kinetic Energy Increases (by definition)
Kinetic Energy Decreases (by definition)
Particle velocity Increases (according to formula)
Particle velocity Decreases (according to formula)
Volume Usually Increases
Volume Usually Decreases
|Not produced by art major.|
Quick reminders… atoms… molecules… Matter is made up of these.
Wednesday, July 22, 2020
Monday, July 20, 2020
Thursday, July 16, 2020
Melting and Boiling Points (intensive)
Mass is an extensive physical property.Density is an intensive physical property.Flammability is an intensive chemical property.