Test Study Guides
I win
test 1 now is done
Volume of sand and water is sand v + water v
Volume of dry sand alone is sand/w water - dry sand
Percent do a ratio blah over blah = x over 100
Kilogram = 1000 grams
Read directions carefully on everything
The sensitivity of the balance is small, do not exaggerate its expansiveness
when pumping air through a tube if there is a hole the air will not make it all the way through
know how to use a ruler
remember to read the meniscus on a graduated cylinder
Test 2 how about you
Memorize post-lab notes and specific classifications of substances
recognize cause and effect on how certain actions will amount to variable-wise and assure yourself you can both relate and explain to said errors/variables
read directions and label measurements (ex. cm, grams)
Percent for change of mass is (delta M/ MI)
Practice histograms (read the intervals and directions carefully and don't make a break unless it has been specified you are allowed
in a change in matter there is no change in mass because of the law of conservation of mass
be aware that not all errors will be from your labs
Test 3 Last one Yipee
READ DIRECTIONS
For estimating how much of something fills a room its not the terms squared time the density of the substance but each term times 100 times the density of the substance
READ DIRECTIONS
you want to transfer liquids as few times as possible in labs for the decrease in accuracy after each transfer
Know the marketing names for chemical compounds and vice versa\
LABEL MEASUREMENT TERMS
DON'T EVER MISS MULTIPLE CHOICE QUESTIONS
Formulas
MF-MI=Delta M
area = l*w*h
Percent of change= Delta M/ MI