Diffusion
Particles travel from an area of ____ concentration, to an area of ____ concentration
high, low
Expansion occurs when solids, liquids, or gasses are:
heated
What does contract mean:
get smaller
What bonds hold water molecules together?
hydrogen
What states of matter does convection occur in:
liquids and gasses
The particles spread out evenly reaching a state called:
equilibrium
What does expansion mean?
get larger
Contraction occurs when solids, liquids, and gasses are:
cooled
True or False: non metals are good conductors
false
True or False: the heated substance is more dense than the other molecules in the substance
false, less
During diffusion particles _____out
spread
During expansion the item occupies ____ space
more
As a substance cools, the particles vibrate ___
less
Non metals are referred to as:
insulators
In what direction do the warm and cool molecules go?
warm: rises
Cool: sinks
During diffusion particles ______ with air or water molecules
collide
The particles of substances which are in solid state are in ______positions
fixed
As a substance cools, the particles occupy ____ space
less
What happens during conduction?
heat causes the particles to vibrate faster and collide. During the collisions heat energy is transferred.
The rising and sinking of particles creates circular movements called:
convection currents
Give an example of diffusion
perfume, tea bags, etc
Collisions during expansion cause molecules to move ________
further apart
Particles move ______ _________ during contraction
closer together
What state of matter dos conduction occur mostly in:
solids
Give an example of convection.
cooking food on the stove
hot air balloons
ocean currents