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Chapter 1
Matter - Its Properties and Measurement

 
 
 
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Demonstration: Mixtures and Compounds (**)
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Movie
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Ink is separated into its components by paper chromatography.
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Demonstration: Paper Chromatography of Ink (**) Chromatography is a physical process that takes advantage of the differing abilities of substances to adhere to the surface of a solid. In this demonstration, black ink is separated into its components as the solvent dissolves the different components at different rates.
1.0.3UN
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01.00.03
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Scientific Method flow chart.
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This is an illustration of the scientific method. The scientific method is the combination of observation, experimentation, and the formulation of laws, hypotheses, and theories.
1.2.1UN
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01.02.01
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H2O, H2O2, and gamma globulin molecular models
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A molecule of water consists of three atoms: two hydrogen atoms joined to a single oxygen atom. A molecule of hydrogen peroxide has two hydrogen atoms and two oxygen atoms; the two oxygen atoms are joined together and one hydrogen atom is attached to each oxygen atom. By contrast, a molecule of the blood protein gamma globulin is made up of 19,996 atoms altogether, but tehy are of just four types: carbon, hydrogen, oxygen, and nitrogen.
1.3
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01.03 C
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A classification scheme for matter
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This is a scheme for classifying matter into elements and compounds and homogeneous and heterogeneous mixtures.
1.4
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01.04 C
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Separating mixtures - composite of 4 photos
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(a) Separation of a heterogeneous mixture by filtration: Solid copper(II) sulfate is retained on the filter paper, while liquid hexane passes through. (b) Separation of a homogeneous mixture by distillation: Copper(II) sulfate remains in the flask on the left as water passes to the the flask on the right, by first evaporating and then condensing back to a liquid. (c) Separation of the components of ink using chromatography: A dark spot of black ink can be seen just above the water line as water moves up the paper. (d) Water has dissolved the colored components of the ink, and these components are retained in different regions on the paper according to their differing tendencies to adhere to the paper.
1.6a
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01.06 a C
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States of matter composite - cartoon of lattice of ice packed molecules in water
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The picture shows a frozen pond with the three states of water as we perceive them macroscopically-- (a) ice (solid water), (b) liquid water, and (c) gaseous water. The circular insets show how chemists conceive of these states of matter microscopically. In ice (solid water), the structure consists of rather closely packed water molecules, each molecule consisting of one oxygen and two hydrogen atoms. In liquid water, the units are mobile water molecules. The gaseous form of water is made up of widely separated water molecules.
1.7
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01.07
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A comparison of temperature scales
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(a) The melting point of ice. (b) The boiling point of water.
1.7.1UN
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01.07.01
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Sidebar to be placed near Ex. 1.1
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This figure compares the SI temperature scale, called the Kelvin scale, with the Celsius (centigrade) and Fahrenheit temperature scales.
1.8
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01.08
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Some metric volume units compared. The largest volume, shown in part, is the SI standard-1 cubic meter (m3). A cube with a length of 10 cm (1 dm) on edge (in blue) has a volume of 1000 cm3 (1 dm3) and is called 1 liter (1 L). The smallest cube is 1 cm on edge (red) and has a volume of 1 cm3 5 1 mL
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1.9.1UN
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01.09.01
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chemical equation for osmium
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1.11
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01.11
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Determining the number of significant figures in a quantity. The quantity shown here, 0.004004500, has seven significant figures. All nonzero digits are significant, as are the indicated zeros.
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1.12.3P66UN
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01.12.03
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an angle iron
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1.12.5UN
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01.12.05
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100ml graduated cylinders with diatomaceous earth
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1.12.6UN
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01.12.06
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3 pycnometers used to determine density: empty, H2O, and methanol
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Table 1.1
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Table 1.1
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SI Base Quantities
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Table 1.1 shows the seven fundamental quantities in the SI (International System of Units); all other physical quantities have units that can be derived from these seven.
Table 1.2
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Table 1.2
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SI Prefixes
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Table 1.2 shows the prefixes that are used for the SI (International System of Units) units of measurement. SI is a decimal system. Quantities differing from the base unit by powers of ten are noted by the use of prefixes.