CHM103 Class Notes Week 2 (8/29-9/2)
CHM103 Class Notes Week 2 (8/29-9/2) 103
Popular in Chemistry for Life Sciences I (Lecture)
verified elite notetaker
Popular in Chemistry
This 2 page Class Notes was uploaded by askcch on Friday September 9, 2016. The Class Notes belongs to 103 at University of Miami taught by Elliot Atlas in Fall 2016. Since its upload, it has received 6 views. For similar materials see Chemistry for Life Sciences I (Lecture) in Chemistry at University of Miami.
Reviews for CHM103 Class Notes Week 2 (8/29-9/2)
Report this Material
What is Karma?
Karma is the currency of StudySoup.
You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!
Date Created: 09/09/16
CHM103 lass Notes Week 2 8/299/2) ________________________________________________________________________________ From revious ections 1.11.5 Definition and examples of matter, physical and chemical properties/change Chemical lements and symbols, chemical eactions ________________________________________________________________________________ Chapter 1: atter and Measurements 1.6 Physical Quantities: Units and Scientific Notation The ysteme International d’ Unites SI) Mass ilograms (kg) Length → eters (m) Volume cubic eters (m^3) Temperature → kelvins (K) Time → seconds (s) Electric Current → mpere (A) Substance Amount → mole (mol) Speed m/s Density → /cm^3 Scientific Notation 7650 .65 10^3 0.00215 = 2.15 x 10^3 1.7 easuring Mass, Length, and Volume Mass: a measure of the amount of matter in an object Weight: a measure of the gravitational force that the earth or other large body exerts on n object Length: the SI unit meter is way too big for usual lab measurements Volume: the amount of space occupied by an object 1.8 easurement and Significant igures Every set of measurements has a degree of uncertainty to it,thus significant figures re pplied Accuracy: how close to observed value is to the “true” value Precision: the reproducibility of values; does it produce the same value every time? Two ypes of rrors for measurements: Random error: randomly too high/low Systematic rror: consistently too high/low 1.034 → 4 sig. fig. 0.0738 → 3 sig. fig. 7.360 → 4 sig. fig 7600 → 2 sig. fig. 1.9 Rounding off Numbers Rule 1: During multiplication or division, the answer can’t have more sig. fig. than the original numbers (the one that has the least sig. fig.) Rule 2: During +/,the answer can’t have more digits after the decimal point than the original numbers (the one that has the least sig. fig.) 1.10 Problem Solving: Unit Conversions and Estimating Answers Factorlabel method Starting Quantity x Conversion Factor = Equivalent Quantity Conversion factors re umerically equal to e.g. 26.22mi x (1km/0.6214mi) 2.20km e.g. 1yard/s → (x)mi/h? x ≈ 2mi/h
Are you sure you want to buy this material for
You're already Subscribed!
Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'