atoms and separation Flashcards
what is an atom
the smallest identifiable amount of an element. they make up everything
what is an element
made up of only one type of atom. found on the periodic table
what is a compound
made when two different types of atoms chemically bonded together
what is a mixture
made when two or more different types of atoms are not chemically bonded together
the total mass of the products or a reaction is equal to…
the mass of the reactants
the number and type of the products are equal to…
the number and type in the reactants
what is a pure substance
one that isn’t mixed with anything else. fixed melting and boiling point
what do you use when distilling
leibig condenser
what do you use to separate soluble mixtures
distillation
what do you use to separate insoluble mixtures
filtration
describe distillation
distillation can be used to remove impurities from water by boiling off the water and getting left with a beaker of pure water and a beaker of the impurities
explain paper chromatography
separates mixtures of substances dissolved in a solvent as they move up a piece of chromatography paper.
why does paper chromatography work
the different substances are separated because of their different solubilities in the solvent used.
what is an ion
an atom that has gained or lost an electron
what is an isotope
an atom that has gained or lost a neutron with the same number or protons and electrons
