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46 Cards in this Set
- Front
- Back
• Pure substance (or plain substance)-
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matter that has distinct properties and a composition that doesn’t vary from sample to sample
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• Mixtures-
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combinations of 2+ substances in which each substance keeps its own chemical identity
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• Law of constant composition-
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elemental composition of a pure compound is always the same
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• Solution-
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homogeneous mixtures
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• Intensive properties-
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don’t depend on the amount of the sample
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• Extensive properties-
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depend on amount of the sample
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• Accuracy-
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how closely individual measurements agree with the correct, or true value
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• Precision-
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how close individual measurements agree with each other
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• Radioactivity-
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spontaneous emission of radiation
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• Avogadro’s number-
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6.022 X 1023
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• Electromagnetic radiation-
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light we can see, radio waves, x-rays, etc
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• Speed of light-
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3.00 X 108
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• Wavelength-
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distance between two adjacent peaks
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• Frequency-
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number of complete wavelengths, cycles, that pass a given point each second
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• Continuous spectrum-
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rainbow of colors, light from all wavelengths
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• Line spectrum-
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spectrum containing radiation of only specific wavelengths
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Water
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H2O
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Hydronium ion
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H3O+
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Ethane
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C2H6
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Ammonia
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NH3
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Methane
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CH4
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Benzane
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C6H6
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Ozone
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O3
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hydrogen ion
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H+
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Lithium ion
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Li+
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Sodium ion
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Na+
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Potassium ion
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K+
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cesium ion
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Cs+
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silver ion
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Ag+
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magnesium ion
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Mg 2+
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calcium ion
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Ca 2+
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strontium ion
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Ba 2+
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Zinc ion
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Zn 2+
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cadmium ion
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Cd 2+
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aluminum ion
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Al 3+
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ammonium
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NH4 +
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Cobalt (II) or cobaltous ion
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Co 2+
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iron(II)
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Fe 2+
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manganese(II)
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Mn 2+
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mercury (I)
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Hg2 2+
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nickel (II)
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Ni 2+
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lead (II)
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Pb 2+
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tin (II)
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Sn 2+
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chromium (III)
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Cr 3+
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Iron (III)
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Fe 3+
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Hydroxide
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OH-
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