compounds + mixtures + elements Flashcards
what is a molecule
it is two or more atoms bonded together
what is a compound
a substance made up of atoms from different elements bonded together
give an example of molecules in a compound
water, h2o
what is an example made of an element made of molecules
hydrogen h with a little 2
what is an elemnet made of atoms
argon, Ar
what are the properties of compounds
they are usually completely different to the elements they are made from
what is a chemical formula
a formula that shows the proportion of atoms of each elements in a compound
when two different compound combien what does the name of the compound usually end in
ide
what is the product of sodium + chlorine
sodium chloride
what is the product of magnesium + oxygen
magnesium oxide
when three or more different elements combine and one of them is oxygen wht does the name usually end in
ate
what is the product of sodium + carbon + oxygen
sodium crbonate
what is the product of copper + sulfur + oxygen
copper sulfate
what is a mixture
a substance made up of two or more elements or compounds that aren’t chemically bonded to each other
how can mixtures be seperated
by physical methods
what physical methods can mixtures be seperated by
filtration, evaporation, chromatography, distillation
what is a element
a subsatance that contains only one type of atom
what do elements have
different properties
