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Physical Science Honors: Matter and Energy

Terms in this set (17)

Matter
Anything that has mass and takes up space
All matter is made of...
Atoms
Kinetic Theory of matter
1. All matter is made of particles that are in constant motion.
2. The faster particles move, the higher the temp of the substance.
3. At the same temp, more massive particles move more slowly than less massive ones.
Definite
Something DOES NOT change
Variable
Something CAN change
Solids
*Particles vibrate in place, move slow
*Cannot change shape easily
*Definite volume
*Definite Shape
Liquids
*Particles can move past each other, move quickly
*Definite volume
*variable shape
Gases
*Particles are far apart, move very quickly
*Variable volume
*Variable Shape
Plasma
*made up of electrically charged, or ionized, particles
*Conduct Electricity
*Variable shape
*Variable volume
*Example: Lightning
Fluid
A state of matter in which the particles are free to move past each other (Liquid, Gas, Plasma)
Energy
The ability to change or move matter
Kinetic Energy
The energy of motion
All particles in a material ____ move at exactly the same speed
DO NOT
Temperature
a measure of the average kinetic energy of the particles
The higher the average kinetic energy of the particles...
The higher the temp
Thermal
The total kinetic energy of all the particles in a substance.
A scientist has two samples of a substance. Both samples have the same temp. One sample has a mass of 10 g. The other has a mass of 20 g. Compare the average kinetic energy and the total kinetic energy of the particles in each sample
*Both substances have the SAME average kinetic energy.
*The 20 g substance has more total kinetic energy because it has more mass.
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