Principles of Chemistry Agenda Review names and collect homework Review elements Safety Review...
-
Upload
felicia-williams -
Category
Documents
-
view
213 -
download
0
description
Transcript of Principles of Chemistry Agenda Review names and collect homework Review elements Safety Review...
Principles of ChemistryAgenda
•Review names and collect homework•Review elements•Safety Review•Class notes on Chemistry
Homework
Pass down signed safety contract!
H
hydrogen
Mg
magnesium
Li
lithium
Ca
calcium
Na
sodium
Ba
barium
K
potassium
Be
beryllium
Sr
strontium
Mg
magnesium
Li
lithium
Sr
strontium
Na
sodium
Be
beryllium
K
potassium
Ba
barium
Ca
calcium
H
hydrogen
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?
CHEMISTRY
Date:
Chemistry
• Definition: is the study of matter and the changes that it undergoes.
• Rewrite this definition in terms that an elementary student would understand.
What is matter?
• Provide your best definition.• Anything that has mass and takes up
space.
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
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.
• 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.
AP BIO
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
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
Hypothesis
• Define.• A tentative explanation of some regularity
of nature.
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.
Scientific Method CONT
• Jack-Jack Attack!
Qual vs. Quant.
• Observations made could be – qualitative – describe color, odor, shape,
etc. – quantitative – measured data:
temperature, pressure, volume, mass, length
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.