Presentation on theme: "Honors Chem Ch 1 Pg 4 Branches of Chemistry Organic – carbon, pharmacy, oil, plastics, synthetics Inorganic – metals Physical – changes in matter relating."— Presentation transcript:
Honors Chem Ch 1 Pg 4 Branches of Chemistry Organic – carbon, pharmacy, oil, plastics, synthetics Inorganic – metals Physical – changes in matter relating to energy Analytical – ident composition of materials Biochemistry – process of living things, resp Theoretical – use math/computers to predict new compounds
Matter Pg 7 Extensive properties – depend on amt present ex: volume, mass, energy Intensive – DOES NOT depend on amt present ex: melting, boiling, density, conducting Physical Change – same substance, diff state ex: melting, boiling, dissolving Chemical Change – new substance ex: rusting, burning, reactants products C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O
Density Baby Oil Red Alcohol Vegetable Oil Ball of Candle Wax Blue Water Ball of Copper
Chapter 2 Experimental Design Have a question you want to test. Hypothesis: If _________, then _________. If = independent variable, idea being tested Then = dependent variable, results Repeated to develop theory
Metric System – Pg 35 Derived Units – use multiple measurements ex: density = mass/volume Accuracy – correctness Precision – consistency % error = your measurement – known constant known constant Significant Figures – Pg 47-49 Scientific Notation – Pg 50-52
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