chemistry Flashcards
whats element
pure substances that contain one type of atoms
compound
substance that contain 2 different elements that are chemically bounded
example of compound
H20 and CO2
mixtures are
combinations of 2 or more substances that are NOT chemically bounded
example of mixture
sand and water and steel and brass
physicals change
when a substance changes but doesnt go into a new chemical and is reversible
chemical change
when a substance changes and does make a completely new chemical and is inrevisible
example of chemical change
burning paper
example of physical change
freezing water
example of element is
helium and sodium He and Na
solute is
a substance that dissolves in another solvent
solute +solvent =
solution
example of solute is
salt
solvent is
a substance that dissolves a solute
example of solvent is
water
chromatography is
method of separating a number of soluble substances from the same mixture
Each of the solutes normally are carried by
the solvent usally water across the paper
some solvent strengths are
ethanol methanol and water
filtration
separating immiscible liquids
distillation
separating miscible liquids
miscible
they mixed togteher
immisicile
they dont mix together
whats distilation
used to separate liquid (the solvent) from a mixture and keep the liquid par
whats filtration
a process by which impurities or particles are removed from a fluid, either a liquid or a gas
