Chapter 3 Flashcards
First point of the Kinetic Theory of Matter
Matter is made of atoms and molecules that act like tiny particles
Second point of the Kinetic Theory of Matter
The particles are always in motion, the higher the temp, the faster the particles
Third point of the Kinetic Theory of Matter
At the same temp, larger particles move slower than smaller particles
What is the Kinetic Theory of Matter meant to show?
difference between the 3 states of matter
Name the 3 common states of matter.
- Solids
- Liquids
- Gases
Physical properties of a gas
- gases are free to spread in all directions
- little or no attraction between gas molecules
- no shape or volume
- can exert a pressure
Pressure
force exerted per unit surface area
Physical properties of a solid
- rigid structure
- molecules are tightly packed
- particles vibrate in place
- bonds between molecules are strong
- have definite shape and volume
Fluids
materials that can spread or flow: liquids and gases
Viscosity
resistance of a fluid to flow; the thicker the fluid, the more viscous it is
Energy
the ability to do work
When must energy be added for a change in the state of matter?
energy is added for melting, evaporation, and sublimation
What happens to the atoms/molecules when energy is added for a change in state of matter?
atoms/molecules gain energy to vibrate faster until they gain enough energy to break away from the surface
When must energy be released for a change in the state of matter?
energy is released for freezing, condensing, solidifying, deposition
What happens to the atoms/molecules when energy is released for a change in state of matter?
atom/molecule slows down as it releases energy into the atmosphere
