thermal physics Flashcards
states of matter
-solid
-liquid
-gas
solid
-fixed shape
-fixed volume
-cannot be squashed
liquid
-no fixed shape
-fixed volume
-cannot be squashed
Gas
-no fixed shape
-no fixed volume
-can be squashed
solid to liquid
melting
liquid to gas
evaporation
gas to liquid
condensing
liquid to solid
solidifying
As particle heat up,;;
they gain more kinetic energy and so move faster
as particles cool down..
it loses kinetic energy and slow down
the lowest possible temperature
-273 degree
Arrangement of solid
closely packed together
arrangement of liquid
the particles have a little distance rather than a solid
particles of gas
the particles are far apart and they collide wth each other
brownian motion
the random motion of microscopic particles
why does gas cause pressure on the walls of its container
because the gas particles are constantly colliding with the walls
what happens to gas when it is heated
the higher the temperature, the faster the particles are moving
what happens when gas is compressed
volume decreases, pressure increases
absolute 0
a temperature where particles have no kinetic energy
kelvin temp
-273
kelvin equation
K=273+temp
boyle’s law
pressure increase,volume decreases
thermal expansion
when solid,liquid and gas expand when their temp increases
which expand the most
gas
which expand the least
solid
how does evaporation cool our body
by absorbing heat energy from your skin as sweat turns into vapor
conduction
the process by which heat energy is transmitted through collision between neighbourthing atoms or molecule
convenction
the process in which heat energy get transporsted from hotter areas to cooler areas
difference between evaporation and boiling
evaporation happens at the surface of a liquid at any temperature and boiling happens throughout the entire liquid at a specific temp called boiling point
big puddle evaporate faster because
because a larger surface area exposes more water molecules to the air, allowing for faster evaporation.
thermal radiation
electromagnetic radiation emitted from a material that is due to the heat of the material
thermal conduction
the diffusion of thermal energy (heat) within one material or between materials in contact
radiation
energy given off by matter in the form of rays or high-speed particles
