Lecture Note
University
Indiana University South BendCourse
CHEMC 101 | Elementary Chemistry 1Pages
1
Academic year
2022
Rose G
Views
20
IPEST TAT beaker enynmeyer flask graduated cylinder crucible labratory burner thermo- meter pipette tube PARTICLE DIAGRAMS DENSITY density mass/volume g/mL, 9/cm³ d=m liquids +273 degree current c To the gas Celsius coKelvin cross multiply if den- sity is given mL= cm³ for volume most dense. least dense MEASURING 2 CONVERSIONS use the conversions given to find the new conversions 1.10cm always round 1 more place than shown on the measuring tool this ruler measures to the. tenths place. ALWAYS view measurements from eye level read from the meniscus (graduated cylinder) 1000 L IL 1000 1000 micro 1,000 mL= I Liter 1000 AC nano pico KHD Bdcm__μ__n_p T "grams bigger→ smaller liters meters significant figures #if you're converting RULES: left to right, the con- version will be smaller a.0.0089040 5all 0's before don't count, all after natural #'s & the decimal do. than the original # b. 340 20's before the tenths place will only count if there's a decimal after it 3-The O here counts because there is a decimal after it. C. 340. d. 37890.00 7 If there are natural numbers before the decimal, anything after it counts e. 0.06 1If there are no natural numbers before the decimal, sig figs start at the first natural # after the decimal f. 1000 1 no decimal point after the O's so only natural #'s count. absolute value SCIENTIFIC NOTATION negative exponent=move decimal← number will be smaller out of notation positive exponent move decimal → number will be bigger out of notation PERCENT ERROR always take % error: laccepted value-experimentall x100 accepted value always include units in answers!
Lab Equipment and Measurement Concepts
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