Sig fig Study guides, Class notes & Summaries

Significant Figures Questions and Answers Scored A+ Rules for identifying significant figures 1) All non-zero digits are significant 2) Zeros that occur between significant digits are significant 3) Zeros to the right of the decimal point AND at the end of the number are significant Rules for using significant figures with addition and subtraction 1) Count the number of significant figures to the right of the decimal point for each number in the problem 2) Add or subtract normally ...

What is an Ion? Atom that has lost or gained an electron What are the 7 diatomic elements? H2, N2, O2, F2, Cl2, Br2, I2 What is an allotrope? Elemental molecules with different formulas i.e. O2 and O3 What is an ionic compound? metal and nonmetal (can be polyatomic too) What is the difference between precision and accuracy? What are the three sig fig rules you need to know? 1. Zeros between nonzero digits are always significant 2. Zeroes at the start of a number are never significant 3...

matter anything with a mass and takes up space (volume) states of matter solid, liquid, gas solid (s) rigid, hard shape, definite volume liquid (l) fluid, takes shape of container and definite volume (molecules have interactions-intermolecular forces) gas (g) fills up container and volume is defined by volume of container (molecules are very far apart so no interaction) properties of matter physical and chemical properties physical property a prop...

Celcius - Answer-(F-32)5/9 HPC media water bath - Answer-45`C, 3hr Precision - Answer-a measure of how close a series of measurements are to one another Accuracy - Answer-how close a measurement is to the true value Electrical Fire - Answer-unplug & sodium bicarbonate analytical balance - Answer-a device for determining mass that gives highly accurate measurements top loading balance - Answer-used to determine mass; not as precise as an analytical balance triple beam balance - Answer-inst...

Portage Chemistry 103 Module 2 Exam SOLUTIONS 100% CORRECT ANSWERS 2.1: MOLECULAR WEIGHT A compound is made up of two or more elements combined in a definite ratio that is represented by a molecular formula. Each of these elements has a certain atomic weight, which can be found in the periodic table. The sum of the atomic weights of the atoms in the molecular formula is called the formula weight or molecular weight or formula mass. Ca3(PO4)2 calcium phosphate Molecular Weight...

sig fig zeros - Answer-1. zeros at beginning NOT signif 2. zeros between ARE SIGNIF 3. zeros at end of number are signif if number contains a decimal point 3.489 x (5.67-2.3) - Answer-3.489 x 3.(3)7 11.75793 12 matter - Answer-composed of mass and must occupy space scales of matter - Answer-macroscopic, microscopic, particulate. scientists think on a particulate scale, observe macroscopically states of matter - Answer-1. change from solid to liquid to gas as temp increases 2. motion of...

Celcius (F-32)5/9 HPC media water bath 45`C, 3hr Precision a measure of how close a series of measurements are to one another Accuracy how close a measurement is to the true value Electrical Fire unplug & sodium bicarbonate analytical balance a device for determining mass that gives highly accurate measurements top loading balance used to determine mass; not as precise as an analytical balance triple beam balance instrument used to measu...

CHEM 2364 Organic Chem Lab Final Test v2 For the following compounds, rank 1 to 5 (1 most acidic; 5 least acidic), and then select the compound that is number 3 in this ranking: A B C D E p-chlorob enzoic acid p-methoxyaniline hydrochloric acid ethanol phenol 2. For the following compounds, rank 1 to 5 (1 most basic; 5 least basic), and then select the compound that is number 2 in this ranking: A B C D E O2N NH2 NNa CH3O NH2 NCCH3 O CH3Na 3. Which one of the following would couple best with a di...

Celcius (F-32)5/9 HPC media water bath 45`C, 3hr Precision a measure of how close a series of measurements are to one another Accuracy how close a measurement is to the true value Electrical Fire unplug & sodium bicarbonate analytical balance a device for determining mass that gives highly accurate measurements top loading balance used to determine mass; not as precise as an analytical balance triple beam balance instrument used to measure...

Which of the following is proper response to getting chemicals in your eyes? - use the eyewash station Tank tops are not considered proper laboratory attire - True I do not have to report burns from hot glassware to my instructor. - False At the end of each experiment, all chemical waste can be poured into the sink. - False After finishing an experiment, goggles can be removed regardless of whether or not others in the lab are still doing the experiment. - False I should avoid touching ch...