phases
how many phases are there
3 phases
what is it called when something goes from solid to liquid
melting
smallest form of a pure substance is
a element
energy is also known as
heat
specific heat
the amount of heat needed to raise the temperature of 1 gram of water by 1 c
what are the three phases
solid, liquid, gas
what is it called when something goes from a liquid to a solid
freezing
homogenues means
the same (same throughout )
what is kinetic energy
movement energy of an object
heat
energy transferred due to a difference in temperatures
solid is when
molecules are closely packed together
when gas turns to liquid
it is called condansation
another example of a pure substance is
compounds
what is potential energy
stored energy
heat fusion
the energy absorbed (endothermic) to melt a sample of a solid to a liquid or the energy released (exothermic) when a sample of liquid freezes to a solid
liquid is when
molecules are still closely packed together but constantly moving
when solid turns to gas what is it called
it is called sublimation
pure substance is th what of chemistry
foundation of chemistry
endothermic
absorbs energy(heat)
heat of vaporization
heat vaporization the energy absorbed (endothermic) to vaporize a sample of liquid to a gas or the energy released (exothermic) when a sample of gas condenses to a liquid
gas is when
molecules are spread far apart
when gas goes from gas to solid what is it called
desposition
what is heterogeneous
diferent throughout
exsothirmic
releases energy (heat)
what is the formula
q=mc^T