The nuclear atom

Question 1

Isotopes

Answer 1

Atoms of the same element with the same number of protons but different number of neutrons

Question 2

Physical properties that vary among isotopes of the same element

Answer 2

• Density
• Diffusion rate

Question 3

Relative atomic mass

Answer 3

Average of the masses of the isotopes of an element

Question 4

Isotopic mass

Answer 4

Mass of one isotope

Question 5

How does a mass spectrometer work ( 5 steps) ?

Answer 5

1. Sample injected through inlet
2. Heater vaporizes sample
3. Electron beam ionises sample
4. Particles accelerated into magnetic field
5. Magnetic field seperates particles based on mass/charge ratio

Lightest particles deflected most
Heaviest particles deflected least