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Unit 1 – Matter and Energy
Chapter 1- Matter and Change
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Groups = VERTICAL COLUMNS Periods = HORIZONTAL ROWS
(Families)
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Elements Metals Location: left of stair step line.
Properties: good conductor of heat and electricity, malleable, ductile, high tensile strength. Nonmetals Location: right of stair step line. Properties: poor conductor of heat and electricity, brittle if solid, many are gases at room temp.
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Elements Types of Elements Metalloids
Location: along the stair step line Properties: have some characteristics of metals and nonmetals Nobel Gases Location: group 18 Properties: generally nonreactive
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Unit 1 – Matter and Energy
Chapter 2- Measurements and Calculations
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Scientific Method Theory Publish Results
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Qualitative Quantitative Units of Measure Descriptive Measurement
(Non-numeric) The fact that the sky is blue Quantitative Measurement (Numeric) A sample of copper ore has a mass of 25.7 grams
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Units of Measure Derived Units – combinations of base units
Examples: Volume, Area, Density Volume = Length x width x height. Area = Length x width. Density = Mass / volume. Conversion Factors – Change one measurement into something easier to understand. Example – Inches to Feet.
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Units of Measure Example 1 – Convert 22 000 g to kg
Example 2 – Convert m to millimeters Example 3 – How many seconds in 3.11 hours?
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