Lesson 1 Concepts
How do particles move?
Particles constantly bump and flow past each other in random motion
Movement in all directions at different speeds
Random Motion
What happens to temperature during a change of state?
While a substance is melting or freezing, the temperature remains constant until the change of state or phase change is complete
Which galaxy is Earth a part of?
Milky Way
What determines How Much Energy Particles Have?
As the kinetic energy of the particles increase, the speed of the particles is increased
Movement of particles from area of higher concentration (more particles) to lower concentration (less particles)
Diffusion
What happens to particles and energy during a change of state?
If energy is continually added to a substance, there reaches a point where the particles cannot go any faster without changing to another state of matter…. The additional energy increases the potential energy of the particles
The change of state from a gas to a liquid
Condensation
What type of animal is Thumper in Bambi?
Rabbit
What happens to a liquid when kinetic energy changes?
As the temperature of a liquid increases, the volume increases. When temperature decreases, so does the volume.
Motion Energy (Produces heat & increases temperature)
Kinetic Energy
How do melting and boiling points of different substances compare?
Each substance has a unique melting and boiling point temperature
The change in state from a liquid to gas
Vaporization
Which male Disney character never grows up?
Peter Pan
How Do Particles in a Gas Compare to Particles in a Liquid?
Gasses and liquids move the same- in straight lines until they collide into something. Random motions and speeds until completely diffused.
Measurement of kinetic energy
Temperature
What factors determine the total energy of a substance?
Total energy of a substance depends on: Kinetic energy (speed) of the particles, potential energy (arrangement) of the particles, total number of particles and type of matter of the substance (p. 48)
Stored energy due to the interactions between particles or energy.
Potential energy
Who wrote Romeo and Juliet
William Shakespeare
What Evidence Is There That Particles in a Solid Move?
Particles in a solid vibrate in place but do not move past one another. Thermal contraction and expansion still happens, but less than in liquids and gasses.
Volume increasing due to temperature & particles pushing away faster (thermometers!)
Thermal expansion
Using a heating curve, tell me where the temperature is increasing, staying the same and potential energy is increasing
...
Total energy of a system that is dependent on the number of particles in a system, state of matter and the temperature.
Thermal energy
About how many days does it take the the Moon to rotate around Earth?
~28