Atomic structure

Question 1

atoms are made from 3 subatomic particles:

Answer 1

protons, neutrons, electrons

Question 2

relative mass and charge of proton

Answer 2

relative mass: 1

relative charge: +1

Question 3

relative mass and charge of neutron

Answer 3

relative mass: 1

relative charge: 0

Question 4

relative mass and charge of electron

Answer 4

relative mass: 1/2000

relative charge: -1

Question 5

isotopes

Answer 5

atoms with the same number of protons, and different numbers of neutrons

Question 6

the atomic number never changes but

Answer 6

the mass number does

Question 7

How do you calculate the relative atomic mass? (RAM)

Answer 7

RAM = (%abundance/100 x mass number) + (% abundance/100 x mass number)

Question 8

What is the maximum amount of electrons in each shell in order?

Answer 8

shell 1 = 2 max
shell 2 = 8 max
shell 3 = 8 max
shell 4 = 2 max

Question 9

what are the Nobel gases?

Answer 9

elements in group 0 have a full outer shell of electrons. these elements are very unreactive (inert). we think this because their outer shell of electrons is full.

Question 10

examples of Nobel gases

Answer 10

argon, xenon, neon, helium