Question 1 · Both levels
Mendeleev left gaps in his periodic table of 1869. Why is this seen as a great strength of his table?
Leaving Cert Chemistry.
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Nine sections, both levels
Nature of science and investigating
Unifying strand
Matter, atomic structure and the periodic table
1.1 to 1.3
The mole, stoichiometry and gases
1.4 and 2.3
Bonding, intermolecular forces and shapes
2.1 and 2.2
Hydrocarbons and organic reactions
2.4 and 4.2
Thermochemistry and rates of reaction
3.1 and 3.2
Chemical equilibrium
3.3
Acids, bases and volumetric analysis
3.4 and 4.1
Electrochemistry and our chemical environment
3.5 and 4.3
| Paper | Time | Weight |
|---|---|---|
| Written examination | 2 hours 30 minutes (sample papers) | 60% |
| Chemistry in Practice Investigation | Up to 20 hours in school | 40% |
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