C2

an element or compound that melts/boils at specific temperatures

relative atomic masses added together

the simplest ratio of the numbers

something (a mixture) which has been created to be a useful product eg. medicines

filtering a solution to leave you with a precipitate

separating a salt from a solution by evaporating the water

separating a pure liquid from a solution by heating the mixture at the specific boiling points

normally done with oil by heating the mixture at different mixtures and condensing the vapour produced

separates mixtures and uses mobile and stationary phases

the mobile phase is the solvent and the stationary phase is the paper

the mobile phase is the solvent and the stationary phase is an inert substance on a non-reactive surface

distance moved by substance ÷ distance moved by solvent

the stationary phase is the liquid and the mobile phase is the inert gas carrier

a reactive element that creates positive ions

a reactive element that creates negative ions

in order of atomic number and elements in the same group have the same amount of electrons

when a metal and non-metal bonds and is connected with high forces and giant ionic lattices

when molecules are covalently bonded by sharing electrons are normally gases or liquids

solids with high melting points

are connected by string covalent bonds and intermolecular forces so is solid at room temperature

giant structures and shared delocalised electrons with high melting and boiling points

electrostatic attractions between shared electrons

electrostatic attractions between charged ions

electrostatic attractions between positive metal ions and delocalised electrons

forming of ionic compounds but cannot represent the 3D arrangements

2,8,8

in order of atomic mass but left some missing for undiscovered elements

each carbon is then connected covalently to four other carbon

graphite is soft as each carbon is bonded to three other carbon atoms and they are in layers which can slide

made up of rings of five to seven carbon atoms

one layer of graphite

to - boiling,melting

from - freezing,condensing

both covalent and ionic bonds are extremely strong

are weak so have low melting and boiling points

1x10-7 m

high surface are to volume ratio

there are unkown dangers of how our cells react