DURPOSE-SCANTRON®- ANSWER SHEET G INSTRICTIONS ON SIDE 2 O1. Identify all that s
ID: 590528 • Letter: D
Question
DURPOSE-SCANTRON®- ANSWER SHEET G INSTRICTIONS ON SIDE 2 O1. Identify all that should NEVER be done in or with a laboratory notebook: (Mark all that apply) A. use of white-out B. making entries in ink C. tearing out individual pages D. numbering the pages E. leaving it at home on a lab day 2. Identify all that must NEVER be done in a laboratory: (Mark all that apply) A. sitting on the lab benches B. drinking beverages C. wearing sandals or flip flops D. eating food E. unauthorized mixing of chemicals 3. According to the safety rules, who is required to wear eye protection in a chemistry laboratory? A. Everyone, at all times B. All visitors, unless they are present for less than one minute C. Everyone, but only when performing an experiment D. Students, but not instructors or TAs E. None of these 4. What is the proper laboratory technique if a student measured too much chemical reat for aacar part of experiment? A. Place the chemical into the appropriate waste container B. Rinse the chemical down the sink C. Place the chemical back into the stock bottle D. Throw the chemical in the trash E. None of these 5. In order, identify the following pieces of glassware or equipment listed at the right A. Erlenmeyer flask, buret, volumetric pipet, Büchner funnel B. Beaker, buret, volumetric pipet, Büchner funnel C. Erlenmeyer flask, eudiometer, buret, gravity funnel D. Beaker, eudiometer, volumetric pipet, Büchner funnel E. Erlenmeyer flask, buret, volumetric pipet, gravity funnel 6. Given the following numbers: 0.00239 45.7854 1.0050 9.0x 10 The proper number of significant digits would be stated as: A. 3, 6, 5, 2 B. 5, 6, 4,1 C. 5, 6, 5,2 . 5, 6,4,2Explanation / Answer
(1)
The following should bever be done in or with a lab notebook:
(2)
Except the first option, which is sitting on benches, no other option should be done in a laboratory
(3)
Everyone, but only when performing an experiment
(4)
Place the chemical into the appropriate waste container
(6)
The correct option is (A), because the number 0.00239 has three significant numbers.
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