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Fields of chemistry
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a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses. Scientific method:
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Variables
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Can write a symbol Or formula Ag CO2
homogeneous mixture is a solid, liquid or gaseous mixture that has the same proportions of its components throughout a given sample (or multiple samples of different proportion) Can write a symbol Or formula made up of two or more different substances which are mix but are combined chemically Ag heterogeneous mixture is made of different substances that remain physically separate. Heterogeneous mixtures always have more than one phase (regions with uniform composition and properties). A mixture of sand and sugar is aheterogeneous mixture. CO2
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Density is a derived unit
Irregular shaped objects use water displacement to find volume Uniform objects can be measured directly to find volume
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The gold foil experiment demonstrated (according to Rutherford) that most of an atom is empty space (therefore % non-reflected α-particles) with a very small positively charged nucleus in the middle (responsible for deflecting 0.005% of all α-particles).
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Lead can only stop gamma radiation
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Fission
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Parts of a wave
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c=speed of light m/s h= × 10-34 m2 kg / s
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Electron Configuration
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Orbital Diagrams
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Ionic radius change
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Mole example
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More Mole examples
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Math …. Metric dimensional analysis
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Mole Calculations
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(Weighted) Average atomic mass (amu’s)
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