past paper chem qs i got wrong

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Last updated 11:14 AM on 4/21/26
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6 Terms

1
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draw the melting point/boiling point graph for period 3 elements

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2
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draw the ionisation energy graph for period 2 elements

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3
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draw the ionisation energy graph for period 3 elements

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4
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explain why the 1st ionisation energy of sulfur is lower than the 1st IE of Phosphorus

5
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what observations are there for:

  1. Br2 + NaI

  2. Br2 + NaCl

6
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How to calculate the number of atoms of an element in a compound?

  • find moles of compound

  • moles of compound x number of atoms x avogadros constant