The Nuclear Atom

Question 1

Subatomic particles

Answer 1

Protons,neutrons, and electors; so small that it is not practical to measure their masses and charges using conventional units

Question 2

How are subatomic particles compared?

Answer 2

Using their relative atomic masses and relative atomic charges

Question 3

Atomic number

Answer 3

Number of protons in the nucleus of an atom

Question 4

Atoms

Answer 4

Are neutral and have no overall charge

Question 5

Isotopes

Answer 5

Different atoms of the same element that contain the same number of protons and electrons but a different number of neutrons

Question 6

Relative atomic mass

Answer 6

The average mass of one atom of an element compared to one twelfth of the mass of an atom of carbon-12

Question 8

Equation for relative atomic mass

Answer 8

Total mass of 100 atoms= (% abundance of isotope A x mass of isotope A) + (% abundance of isotope B x mass of isotope B)

relative atomic mass= total mass of 100 atoms/ 100