Title: Observations of Chemical Changes Purpose: To learn about the international system of units (SI)‚ to become familiar with common lab equipment and techniques‚ to gain proficiency in determining volume‚ mass‚ length‚ and temperature of a variety of items using common laboratory measurement devices‚ to learn to combine units to determine density and concentration‚ and to use laboratory equipment to create serial dilutions and determine the density and concentration of each dilution. Procedure:
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Laboratory Techniques and Measurements Lab 1 The purpose of this lab was for the student to get involved with his or hers new lab kit as well as being able to know‚ identify and use each other tools provided in the kit. Another key learning aspect of this lab is to teach the student how to measure properly the many units in the SI system. I will be using laboratory dilutions‚ measurements‚ and weights to then calculate using algebraic formula. Throughout lab one we were introduced to
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LaGarrian Harris|Date: 2/10/2013| Exp 2: Laboratory Techniques & Measurements|Lab Section: 1411| Data Tables: Length Measurements Object Measured|Length in cm|Length in mm|Length in m| Key|5.2|52|0.05| CD|12.0|120|0.12| Spoon|15.0|150|0.15| Warm Temperature Measurements Hot tap water temperature __44.0 ˚?C 111.2˚?F 317.15_K Boiling water temperature at 5 min __100_˚?C _212 ˚?F 373.15_K Cold Temperature Measurements Cold tap water temperature _19.0_˚?C _66.2_˚?F
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Date:2/11/13 | Exp 1: Laboratory Techniques & Measurements | Lab Section: 73426/0 | Data Tables: Length and Measurements Object Measured | Length in cm | Length in mm | Key | 6.4cm | 64mm | Fork | 26.5cm | 265mm | CD | 17cm | 170mm | Warm Temperature Measurements Hot tap water temperature _73___˚C Boiling water temperature _101___˚C Cold Temperature Measurements Cold tap water temperature __15__˚C Ice water temperature __0__˚C Volume Measurements Volume of completely filled small
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Experiment 1 Laboratory Techniques and Measurements Purpose: To determine measurements of different items that vary from solids to liquids and be able convert those values to other SI units of measurement. Procedure: I used a variety of scientific tools such as; a ruler‚ beaker‚ graduated cylinder‚ volumetric flask‚ thermometer‚ burner‚ and digital scale to find unknown values of measurements for each of the indicated
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Date report submitted: June 18‚ 2015 Title: Lab Techniques and Measurements PURPOSE: The purpose of this experiment is for the students to get a better knowledge with the laboratory tools and techniques. This experiment taught me how to convert between SI units and standard American units of mass‚ length‚ temperature‚ volume and time as well as how to measure the units. Students become proficient in laboratory techniques such as measuring temperature and volume and calculating within them. Procedure:
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Lab One: Laboratory Techniques and Measurements Abstract The Lab One was done on Laboratory Techniques and Measurements. The first experiment with my Lab partner; we got opportunity to experiment how to conduct measurements in length by using metric conversion. We started in cm units and changed into mm by x10‚ and moving decimal point x1 to right. To find in meter we moved from cm to meter two decimal points to the left or double check our self divided by 100 and all records in data
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Principle. obseRvations Data Table 1: Length measurements. Object Length (cm) Length (mm) Length (m) CD or DVD 12 cm 120mm 0.12 m Key 5 cm 50mm 0.01m Spoon 15cm 150mm 0.15m Fork 18cm 180mm 0.18m Data Table 2: Temperature measurements. Water Temperature (°C) Temperature (°F) Temperature (K) Hot from tap 42c 107.6f 315 k Boiling 99 c 210.0 f 372 k Boiling for 5 minutes 100 c 212 f
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Laboratory Techniques & Measurements Observations from Procedures Data Table 1 – Length measurements Object|Length (cm)|Length (mm)| CD|12|120| Key|5|50| Spoon|17|170| Fork|19|190| Metric Ruler|30|300| Data Table 2 – Temperature measurements Hot water from tap (44ºC )|Boiling water (70ºC)|Boiling water – 5 minutes (100ºC)| ]111.2 F|158 F|212 F| Cold water from tap (24ºC)|Ice water (5ºC)|Ice water – 5 minutes (0ºC)| 75.2 F|41 F|32 F| Data Table 3 – Mass measurements Object|Estimated
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Math Practice Lab Pre-Lab Questions: 1. The rules concerning handling significant figures are as follows: When dividing/multiplying The answer has no more significant digits than the number with the fewest significant digits (the least precise figure). Round off after calculations have been performed. When adding/subtracting Answer has no more places than the addend‚ minuend‚ or subtrahend with the fewest number of decimal places. Significant figures are irrelevant when adding/subtracting
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