Molecules and matter Flashcards
describe a solid
Packed in a regular structure strong horses hold in place so it can’t move
describe a liquid
close together horses kept contact but can move about
describe a gas
separated by large distances weak forces that constantly randomly moving
how do you calculate density?
mass divided by volume
what is internal energy?
the energy stored in a system by the atoms and molecules that make up that system
what is latent heat?
the energy needed to change the state of a substance without a change in temperature
describe molecules in a gas
they are in constant random motion
describe boiling point
the temperature at which a pure substance boils or condenses
what is density?
mass per unit volume of a substance
what is the freezing point?
the temperature at which a pure substance freezes
what is a physical change?
a change in which no new substance says are produced
what is internal energy?
the energy of particles of a substance due to the individual motion and positions
