molecule Flashcards
(25 cards)
what is the molecule?
It is the smallest part of matter that can exist freely and has the properties of matter
What are the properties of the molecule?
- continuous motion
- intermolecular spaces
- intermolecular force
a drop of ink spreads thought water
b.c the molecules of ink are in continuous motion in all directions among the molecules of water
when you leave the perfume bottle open , you will smell it all over the room
b.c the molecules of perfume in continuous motion and they keep the properties of perfume
the volume of a mixture of water and alcohol is less than the sum of their volumes before mixing
b.c Some of the alcohol molecules occupy the inter-molecular spaces among water
the disappearance of a small amount of table salt when it is put in a beaker
b.c some of the salt molecules occupy the intermolecular among the water
intermolecular spaces
the spaces that are found among the molecules of matter
It is difficult to break a piece of iron
b.c the attraction force among molecules is very strong in solids
it is easy to divide the amount of water
b.c the attraction force among molecules is weak in the liquids
intermolecular force
the force that binds the molecules of matter together
states : (solid liquid gas)
compre
motion
limited
more free
completely free
states ( solid liquid gas )
compare
intermolecular spaces
narrow
large
very large
solid liquid gas
compare
intermolecular force
very strong
weak
very weak
solid liquid gas
compare
shape_ volume
definite-definite
indefinite -definite
indifinite -indefinite
melting process
It is the change of matter from a solid state to a liquid state by heating
vaporization process
It is the change of matter from a liquid state to a gases state by heating
kinds of molecules
element -compound
element
it is the simplest pure form of the matter which can’t be analyzed chemically into simpler form by simple chemical methods
monoatomic
liquid mercury
gas helium
xenon
radon
krypton
neon
argon
diatomic
liquid bromine
oxygen
nitrogen
hydrogen
chlorine
fluorine
compound
it’s a substance that is formed from the combination of atoms of two or more different elements with constant weight ratios
hydrogen chloride
water
ammonia
2H+1CL
2H+1O
3H+1N
The properties are different in molecules
a. number of atoms
b. kinds of atoms
c. way of combination between atoms
compare element
compound
similar
different
