principles of chemistry agenda review names and collect homework review elements safety review...
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H hydrogenTRANSCRIPT
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Principles of ChemistryAgenda
•Review names and collect homework•Review elements•Safety Review•Class notes on Chemistry
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Homework
Pass down signed safety contract!
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H
hydrogen
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Mg
magnesium
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Li
lithium
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Ca
calcium
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Na
sodium
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Ba
barium
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K
potassium
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Be
beryllium
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Sr
strontium
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Mg
magnesium
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Li
lithium
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Sr
strontium
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Na
sodium
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Be
beryllium
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K
potassium
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Ba
barium
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Ca
calcium
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H
hydrogen
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Safety Rules Review
• Where is the fire extinguisher?• Where is the eye wash?• Where do we meet in case of a fire?• Where is the shower?• Where is the fire blanket?• Where is the phone?• Where is your nearest exit?
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CHEMISTRY
Date:
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Chemistry
• Definition: is the study of matter and the changes that it undergoes.
• Rewrite this definition in terms that an elementary student would understand.
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What is matter?
• Provide your best definition.• Anything that has mass and takes up
space.
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Mass vs. Weight
• What’s the difference?• Mass is constant. It depends on the
amount of matter present.• Weight varies depending on the pull of
gravity
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Branches of Chemistry• Analytical* • Studying substance to determine what they
are made of (Laboratory work) ex. Food nutrients and quality control
• Physical • the physics behind changes of matter & the
related energy changes. ex: Reaction rates and reaction mechanisms.
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• Biochemistry • the biology of matter and processes of living
organisms. ex: metabolism, fermentation
• *Inorganic • the study of the periodic table - This Class
ex: metals, metalloid and nonmetals• Organic • the study of carbon containing compounds.
ex: pharmaceuticals and plastics.
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AP BIO
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Select an A and B person
• Without referencing your notes, person A explain the five branches to person B. Person B check for accuracy by referencing notes.
• Switch roles
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Scientific Method• Write the 6 steps to the scientific method.• Compare with others. Did you get them all?
1. State the problem2. Gather information3. Hypothesis4. Experiment5. Record and Analyze Data6. Conclusions
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Hypothesis
• Define.• A tentative explanation of some regularity
of nature.
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Scientific Method CONT
• A theory is a TESTED explanation of basic natural phenomena.– Watch out! Society uses “theory” as scientists
define hypothesis.• A Scientific law is a theory proven correct
and there are no exceptions.
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Scientific Method CONT
• Jack-Jack Attack!
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Qual vs. Quant.
• Observations made could be – qualitative – describe color, odor, shape,
etc. – quantitative – measured data:
temperature, pressure, volume, mass, length
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Variables may be…
• independent – controlled variable (time, temperature) (X-axis).
• dependent – changes depending on independent variable (Y-axis).
• Need a control – a standard to compare to.