Decoding chemical Formulae

Q1: Which of these is a noble gas?

Incorrect - oxygen is in group 6.
Correct, Neon is in group 8(or0) - well done!
Incorrect - gold is a transition metal.


Chemical Properties

Q2: Why are noble gases unreactive?

Correct - well done!
Incorrect - they are colourless but this isn't what makes them unreactive


Physical Properties

Q3: What happens to their boiling point as you go down the group?

Correct - well done!
Incorrect.


Physical Properties

Q4: What happens to the density of the noble gases as you go down the group?

Afraid not!
Afraid not!
Correct!


Extension

Q5: Helium is commonly used in balloons because it is lighter than air. Why krypton or xenon be bad choices?

Incorrect.
Incorrect - bar radon noble gases are non-toxic.
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