по Boedy Noa 7 лет назад
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Unit 5 Reactions - Boedy Noa
The principles of conservation laws are fundamental in understanding chemical reactions. Matter and energy cannot be created or destroyed; they simply transform from one form to another.
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Unit 5 Reactions Single Displacement Reactions Cation Reactions:
AX + B ---->BX +A 1 cation (+ion) replaces another
1 anion (-ion) replaces another Steps:
1. Does element replace metal in compound?
2. If so, what ions are now paired?
3. Criss-Cross Synthesis Reaction Combustion Reaction:
Complete V. Incomplete Transition Metal has multiple charges so they
multiple products Diatomic Molecules:
Pure elements that aren't just their own symbol Element + Element -----> Compound
Metal + Non Metal -----> Ionic Compound Use of Oxidation Numbers Should Knows:
Should Dos:
Metals lose electrons
Non-metals gain electrons Group | Oxidation#
1 | +1
2 | +2
3 | +3
4 | +/- 4
5 | -3
6 | -2
7 | -1
8 | 0 Laws of the Universe Whitemans always right (sike.) Not all the time Entropy All system tend towards a state of maximum disorder. Conservation of Energy Energy cannot be created or destroyed,
it can only change form. Conservation of Matter Matter cannot be created or destroyed,
it can only change form.
