Chemistry Calculator
Chemistry Problems
Mole Calculator
Stoichiometry Calculator
Balancing Equations Calculator
Chemistry Answers
Explain why sulfur deviates from the general trend in ionisation energies across period 3.
A Level
Related A Level Questions
Explain how fractional distillation works.
What does ‘aromatic’ mean?
Could you explain why water has a high latent heat of vapourisation?
Magnesium is in Group 2 of the Periodic Table. It has a number of naturally occurring isotopes, including 24Mg and 26Mg. (a) (i) Explain, in terms of the subatomic particles in the atoms, why 24Mg and 26Mg are isotopes.
Molecules of hydrogen chloride, HCl, and molecules of fluorine, F2, contain the same number of electrons. Hydrogen chloride boils at –85 °C and fluorine boils at –188 °C.Explain why there is a difference in the boiling points of HCl and F2.
Levels
All Levels
11 plus
13 Plus
A Level
GCSE
IB
KS3
Mentoring
Scottish Highers
University