Lab 1 ID v Individualization - Shruti Tokekar

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Kean University *

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1000

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Chemistry

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Dec 6, 2023

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pdf

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8

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Name: Shruti Tokekar, Bianca ________ Hint: Do Not be Vague Lab #1 Identification v. Individualization Part A: Comparing Beakers Objective: (overall purpose) The purpose is to compare the difference between each beaker that individualizes them from each other. Q1: Knowing the beakers come from the same lot and box, what are your expectations about the likelihood of their being identical? The likelihood of them being identical would be because they come from the same lot and the same box with the same manufacturers. Data: (complete description) Specimen #1 is It’s a small beaker with measurements through 20ml to 150mllisted as “Approximate volume” painted out on it in white. There are paints chipped off from the 140ml and the 150ml. It also has a slight fade on some of the numbers. It also has a white paint box that is labeled “SP #9”. There are scratches left from stirring liquid in the beaker. It also has residue from being used leaving white uncleaned stains in the beaker. Diagram
Specimen #2 is (individual identification) It’s a small beaker 3.2in long, 2.8imches wide. It has labeled measurements from 20-140ml (approx. vol). it has residue from previous use. It has “150ml Kimax USA”, “No 1400” and is labeled “SP #10”. Has a fade in the writing for “approx. vol.”. Diagram
Comparative Data Specimen #1 Specimen #2 Manufacturer Kimax USA Kimax USA Composition glass glass Weight (dry) grams 72.608 77.916 Capacity (mls) 150 ml 150 ml Height (cm) 3.2 cm 3.2 cm Circumference (cm) 2.7 cm 2.7 cm Volume Accuracy - 20 % difference 20 % difference Compare at 50ml 124.669g 124.649g 80ml 150.451g 153.907g Individual Characteristics - scratches on the inside from stirring liquid. - has paint chips on 140ml and 150ml. - fade in the writing for “approx.. vol” - has residue left from previous use (check consistencies between the two specimens. Must list criteria for both specimens) Compare the results of Spec. #1 and Spec. #2 ( list characteristics that are the same especially individual char and char that are very different)(data means nothing without an interpretation)
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