AS-level Chemistry Cambridge Complete
Chemistry
This deck is made by a dedicated AS-level chemistry student who would like to share her work with others.
Sample Data
| Front | R: primary alcohol N: oxidation |
| Back | P: aldehyde + H2O (further oxidation to carboxylic acid if done under reflux)C: acidified potassium dichromate (K2Cr2O7), heatedO: turns from orange to green |
| Front | Explain why this trend in IE occurs and how this explains the change in reactivity going down group 2.
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| Back | IE decreases ==>- Greater shielding effect provided by extra inner shells of electrons - Larger distance of the outermost electrons from the nucleus - This outweighs the attraction of the higher nuclear charge How does reactivity change?- Group 2 elements = more reactive going down the group Why?- Takes less energy to remove the pair of outer electrons |
| Front | Describe and explain the periodic patterns of atomic radii? |
| Back | Atomic radius decrease across a period because :- Number of protons increases - Shielding remains the same as extra electron goes in the quantum shell
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