03 Scientists Love to Measure

03 Scientists Love to Measure - Question from Last Time Are...

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1 1 Question from Last Time Are all of the following statements correct? (A) yes (B) No Sodium and chlorine are elements. Sodium chloride is a compound. Sodium, chlorine, and sodium chloride all are pure substances. Sodium chloride (table salt) and water form a homogeneous mixture, which also can be called a solution. Sodium chloride and pepper form a heterogeneous mixture. 2 Question from Reading 2.4 Which statement A – D regarding significant figures is not correct? If more than one is incorrect, respond (E). A) The significant figures in a numerical measurement are those that are certain plus the one that has some uncertainty. B) The length 0.000123 cm has 3 sig figs. C) The mass 1.230 g has 4 sig figs. D) The mass 6.50 g has 2 significant figures. E) More than one is incorrect.
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2 3 OWL Homework Now available Consists of QRT + others from OWL Each question has variations to allow for learning and multiple attempts. Need to complete 2/3 for credit. Wed: Ch 1 QRT 21, 29, 37, 41, 52 Fri: Ch 1 QRT 61, 62, 87 Due Wed 9/9 at 1 PM Typically assigned in one class and due by the next class, but may have extra time as indicated in OWL. Report work on OWL not in CHE 129 Workshop 4 Schedule Change Read 2.1-2.5, 2.9 soon, may be helpful on OWL homework. For Wednesday 9/9 Read 2.6-2.8
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3 5 LUCID Quizzes Use for assessment of your success each week after you have completed your efforts in learning that week’s material. Therefore only 2 attempts per question. Schedule Typically out Wednesday noon Due Monday night (3 AM Tu) Except next week, due by 3 AM Wed 6 Mon Tue Wed Thu Fri Mon Tue OWL Homework for learning and practice LUCID Quiz for assessment of success Week’s Assignments
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7 Chemistry Learning Center Chemistry Room 312 Schedule is posted on Bb 8 Scientists Love to Measure Guided Explorations 01-2, pp. 5 – 10 Practice on units, unit conversion, unit analysis, and problem solving.
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03 Scientists Love to Measure - Question from Last Time Are...

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