Chemistry Midyear Review (Labs)

By paul.bodet16, Dec 2010

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Qualitative and Quantitative Observations	using senses to make observations versus making calculated observations
Dichotomous Key	algorithm for figuring out the identity of an unknown substance
Mixture Separation	using the unique properties of substances (boiling/melting points) to isolate them
Density of Water	1g/cc
Precision	the consistency of your measurements
Accuracy	the “correctness” of your measurements
Gas Pressure vs. Volume	inversely proportional; going up/down in one you brings the other down/up
Gas Volume vs. Temperature	directly proportional; both go up or both go down
Conservation of Mass	throughout any reaction, the collective mass of the reactants and the products will be equivalent
Calcination of Magnesium	showed us that compounds always exist in fixed ratios (in this case the ratio of Mg to Oxygen is 2:3)
Synthesis of Zinc Iodide	examine the constant proportions of compounds; every Zinc Iodide compound is 80% iodide and 20% zinc
Hydrate Lab Formula	hydrated crystals are known for their ability to retain water; our crystalline could hold 4 oxygen atoms

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