physics chapter 8 - 10 Flashcards
What is the particle arrangement of a solid?
- very closely packed together
- arranged in regular pattern
What is the particle arrangement of a liquid?
- closely packed
- arranged with no regular pattern
What is the particle arrangement of gas?
- far apart
- has no regular pattern
Which property of matter causes density change?
The particle arrangement.
Describe the movement and forces of attraction of a solid
- vibrate about their fixed positions
- held together by very strong intermolecular forces of attraction
Describe the movement and forces of attraction of a liquid
- move past one another randomly
- held together by strong intermolecular forces of attraction
Describe the movement and forces of attraction of a gas.
- move randomly and rapidly at high speeds
- held together by weak forces of attraction
What property of matter causes changes in shape and compressibility?
Movement of particles in the matter
AND
Intermolecular forces of attraction between particles
Define Brownian motion.
- random & continuous motion of particles suspended in fluids
Describe Brownian motion of smoke particles in the air.
caused by uneven bombardement of air molecules on different sides of the smoke particles to change direction after each collision
Define thermal equilibrium
- two or more objectshave the same temperature and thus no net transfer of energy
Describe conduction in solids.
1) Thermal energy transferred to rod by heating, particles nearer to heat source vibrate more vigorously about fixed pos.
2) Thermal energy transferred via collisions of energetic particles to less energetic particles
3) Colder regions will vibrate more vigorously
Describe conduction in Metals
1)has free electrons which are smaller than particles and move at faster speeds
2)allows electrons to easily move to the cooler end and transfer thermal energy to the particles
3)particles will vibrate more vigorously after electrons collide with them
Specific Heat Capacity Formula
c = Q/m△θ
Heat Capacity Formula
c = Q/△θ
