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Question 1

Name 3 subatomic particals

Answer 1

proton,neutron,electron

Question 2

relaive mass of the subatomic partials

Answer 2

proton =1 nutron =1 electron=0

Question 3

whats protons charge

Answer 3

+1

Question 4

whats electros charge

Answer 4

-1

Question 5

whats neutrons charge

Answer 5

0

Question 6

whats the mass number

Answer 6

top number

Question 7

wats the atomic/ proton number

Answer 7

bottom number

Question 8

How do you find the number of electrons in an atom

Answer 8

the number of elecrons is = the number of protons

Question 9

what are the 3 physical states

Answer 9

liquid solid gas

Question 10

what is an isotope

Answer 10

diffrnt form of the same element -same num protons but diff number nutrons

Question 11

what is the equaion of relative mass

Answer 11

relative atomic mass =sum of isoyope abundance x istope mass divided by sum of abundance of all the isotopes.

Question 12

what is a compound

Answer 12

substances formed with 2 or more elemonts chemicaly bonded

Question 13

what is a mixture

Answer 13

2 elements that are not chemically bonded and can be seperated fairly eaily

Question 14

what is chromotography

Answer 14

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

Question 15

what are the 2 phases of chropmotography

Answer 15

stationary phase and mobile phase

Question 16

how can u use chromotography to find out pure or impure substances

Answer 16

pure 1 dot impure substances (mixture) will have more than 1

Question 17

why draw the baseline drawn in pencil

Answer 17

draw in ink it will run up the page

Question 18

what are the 4 steps of filtration nd cryslisation procces

Answer 18

grinding - filtering - evaparation- dissolving

Question 19

what is disstolation

Answer 19

used go separate mixtures wich contain liquids

Question 20

whats siple disstolation

Answer 20

heat waterr turns to water vaoupre water vaopure then condenes and falls into a diff beaker

Question 21

whats fractural disstolation

Answer 21

crude oil is heated in a fractionating column. the vaoperiserrs and condences diff tsemps seerating ino diffrent liquids.

Question 22

define boioling point

Answer 22

the point at wich liquid turns to a gas

Question 23

what is freezin point

Answer 23

the point at wich liquid turns to a solid

Question 24

whats melting point

Answer 24

th epoit when a solid turns to a liquid