2.1 The nuclear atom

Question 1

define atomic number

Answer 1

number of proton

Question 2

define electron

Answer 2

atomic particle with a mass of 0 and a charge of -1

Question 3

define ion

Answer 3

atoms with different charge due to different amounts of electrons

Question 4

define isotope

Answer 4

atoms with different mass numbers due to different amounts of neutrons

Question 5

define mass number

Answer 5

the atoms relative mass
mass number = protons + neutrons

Question 6

define neutrons

Answer 6

nuclear particles with a mass number of 1 and a charge of 0

Question 7

define nucleon

Answer 7

components of the nucleus (proton and neutrons)

Question 8

define proton

Answer 8

nuclear particle with a mass of 1 and charge of +1

Question 9

define atom

Answer 9

the smallest part of an element

Question 10

in atomic notations:
what does X stand for?

Answer 10

the element

Question 11

in atomic notations:
what does the A stand for?

Answer 11

the mass number

Question 12

in atomic notations:
what does the Z stand for?

Answer 12

the atomic number

Question 13

in atomic notations:
what does the ‘n’ stand for?

Answer 13

the atomic charge

Question 14

what is a mass spectrometer?

Answer 14

a device used to determine an element’s relative atomic mass from its isotopic compositions

Question 15

what is a mass spectrum?

Answer 15

the graph produced from a mass spectrometer showing isotopes and their relative abundances

Question 16

what is the smallest art of an element?

Answer 16

an atom

Question 17

where are protons and neutrons located?

Answer 17

in the nucleus

Question 18

what are the components of a nucleus?

Answer 18

nucleons

Question 19

the number of protons an atom has is called ____

Answer 19

atomic number

Question 20

atoms with different mass number due to different amounts of neutrons are called…?

Answer 20

isotopes