2.1.1 atomic structure and isotopes

Question 1

What is an isotope?
2.1.1(a)

Answer 1

Atoms of the same element with the same number of protons but different number or neutrons
OR
Atoms of the same element with the same atomic number but different mass number

Question 2

What is the relative isotopic mass
2.1.1(c)

Answer 2

the mass of an atom of an isotope compared with 1/12th mass of an atom of carbon-12

Question 3

what is the relative atomic mass
2.1.1(c)

Answer 3

weighted mean mass of an atom of an element compared with 1/12th mass of an atom of carbon-12

Question 4

how do you determine the relative isotopic masses and relative abundances of the isotope
2.1.1(di)

Answer 4

using a mass spectrometer

Question 5

How to calculate relative isotopic mass

Answer 5

-multiply the mass of each isotope by its percentage abundance