c1 Flashcards
(24 cards)
Name 3 subatomic particals
proton,neutron,electron
relaive mass of the subatomic partials
proton =1 nutron =1 electron=0
whats protons charge
+1
whats electros charge
-1
whats neutrons charge
0
whats the mass number
top number
wats the atomic/ proton number
bottom number
How do you find the number of electrons in an atom
the number of elecrons is = the number of protons
what are the 3 physical states
liquid solid gas
what is an isotope
diffrnt form of the same element -same num protons but diff number nutrons
what is the equaion of relative mass
relative atomic mass =sum of isoyope abundance x istope mass divided by sum of abundance of all the isotopes.
what is a compound
substances formed with 2 or more elemonts chemicaly bonded
what is a mixture
2 elements that are not chemically bonded and can be seperated fairly eaily
what is chromotography
line on paper in penil then put spot of ink on the paper then put it in a solvent (water) solvent travels up the paper carries along the die
what are the 2 phases of chropmotography
stationary phase and mobile phase
how can u use chromotography to find out pure or impure substances
pure 1 dot impure substances (mixture) will have more than 1
why draw the baseline drawn in pencil
draw in ink it will run up the page
what are the 4 steps of filtration nd cryslisation procces
grinding - filtering - evaparation- dissolving
what is disstolation
used go separate mixtures wich contain liquids
whats siple disstolation
heat waterr turns to water vaoupre water vaopure then condenes and falls into a diff beaker
whats fractural disstolation
crude oil is heated in a fractionating column. the vaoperiserrs and condences diff tsemps seerating ino diffrent liquids.
define boioling point
the point at wich liquid turns to a gas
what is freezin point
the point at wich liquid turns to a solid
whats melting point
th epoit when a solid turns to a liquid
