Showing posts with label science. Show all posts
Showing posts with label science. Show all posts
Tuesday, March 24, 2009
Tuesday, February 3, 2009
5.01 - Synthesis Reactions - 15:18
KEY CONCEPTS:
2 or more reactant --> 1 product
metal oxide + water --> base (bases contain an OH-)
non-metal oxide + water --> oxy-acid
(oxy-acid is a polyatomic with a hydrogen acting as a cation) - see what type of polyatomic comes to mind when you look at the non-metal oxide
Sunday, February 1, 2009
4.02 - Balancing Equations - 22:35
KEY TERMS: balance both sides of the equation by placing a number (coefficient) in front of the compound. Don't be afraid to have to change that number if it does not completely balance the equation. Balance polyatomic ions first. Remember that REACTANTS are to the left of the arrow and PRODUCTS are to the right of the arrow. Refer to episode on "Counting Atoms". Don't forget your diatomic molecules:
oxygen = O2
hydrogen = H2
bromine = Br2
chlorine = Cl2
iodine = I2
fluorine = F2
nitrogen = N2
Tuesday, January 27, 2009
3.08 - Covalent Compounds - 14:25
KEY TERMS: 2 or more non-metals
Prefixes: mono, di, tri, tetra, penta, hexa, hepta, octa, nona, deca
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