Matter Flashcards
it only has one identity
pure substances
can be separated by physical means
mixture
measure of an object’s inertia
matter
found in nature as single atoms
monatomic
mixture that id different throughout
heterogeneous
cannot be separated by chemical means
elements
found in nature as more than two atoms
polyatomic
two or more atoms chemical combined
compound
more then one identity
mixture
found in nature in pairs
diatomic
smallest unit is the atom
elements
ratios do not matter
mixture
smallest unit is the molecule
compound
made of one type of atom
elements
mixture that is the same throughout
heterogeneous
what can a list of physical properties tell you about a substance? (two things)
identity and function
why is melting wax a physical change?
because in the end its still wax
is baking a cake a physical or chemical change? and why?
chemical change because you can’t get it back to what it was
how do you know that burning wood is a chemical change?
because it can’t go back to what it was
solid to a liquid
melting
liquid to a solid
freezing
liquid to a gas
vaporization
gas to a liquid
condensation
solid to a gas
sublimation
definite volume but not a definite shape
liquid
fills any container it is placed in
gas
flows
gas, liquid
definite volume and shape
solid
atoms are far apart and move fast
gas
atoms are close together and do not move much
solid
atoms will move faster when heated and slower when cooled
solid, liquid and gas
good conductor of heat and electricity
physical
shiny
physical
forms green carbonate when in contact air
chemical
copper can be pounded into a bowl
physical
barium melts at 725 degrees C
physical
neon does not readily react with any other element
chemical
the density of is 13.2g/ml
physical
