Laboratory Techniques & Measurements Observations from Procedures Data Table 1 – Length measurements Object|Length (cm)|Length (mm)| Band-Aid Canister|10.3 cm|103 mm| Fragrance Oil Bottle |7.3 cm|73 mm| Pill Bottle|7.1 cm|71 mm| Data Table 2 – Temperature measurements Hot water from tap(ºC )|Boiling water(ºC)|Boiling water – 5 minutes(ºC)| 52 ºC|99 ºC|100 ºC| Cold water from tap(ºC)|Ice water (ºC)|Ice water – 5 minutes (ºC)| 23 ºC|10 ºC|10 ºC| Data Table 3 – Volume measurements
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Laboratory Techniques and Measurements Choose any three objects that are shorter than the metric ruler to measure‚ such as a CD‚ Key‚ spoon etc. OBJECT | LENGTH (cm) | LENGHTH (mm) | ruler | 30.5 cm | 305 mm | thermometer | 15.1 cm | 151 mm | pencil | 16.7 cm | 167 mm | Warm Temperature Measurements * Fill a 100 a 100mL beaker with 50mL of hot water. Get the water as hot as possible. * Use thermometer to measure the temperature of the water in the beaker using Celsius unit
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General Chemistry 1 Lab 1: Laboratory Techniques and Measurements Purpose: The purpose of this lab is to ensure that students are able to understand how to conduct measurements of length‚ mass‚ temperature‚ density and volume using different measuring devices. Students will also learn how to dilute substances by using simple algebra. Procedure: 1. Prepare a data table similar to Data Table 1 shown below. 2. Choose any three objects that are shorter than the metric ruler to measure‚ such
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HM130 Lab 1 SAFETY‚ EQUIPMENT ‚ AND THE SCIENTIFIC METHOD Name: 1. A student enters their laboratory setting and is getting ready to set up. What preparations should be made? (16 points) The pan student should know the reason for being there and be prepared with all the tools needed for the lab. They should follow all safety measures and make sure they understand the assignment. They should wear all PPE and read all instructions and labels carefully. The student should
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“We cannot know the consequences of suppressing a child’s spontaneity when he is just beginning to be active. We may even suffocate life itself. That humanity which is revealed in all its intellectual splendor during the sweet and tender age of childhood should be respected with a kind of religious veneration. It is like the sun which appears at dawn or a flower just beginning to bloom. Education cannot be effective unless it helps a child to open up himself to life.” -- Maria Montessori
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Ronald Ian T. Borja BSEE - SEP I - R Biofuel Made of Used Cooking Oil Introduction Biofuel‚ a gasoline and diesel fuel substitute that can be made from a variety of oils‚ fats‚ and greases‚ is of interest to farmers for a number of reasons: It can provide an additional market for vegetable oils and animal fats. Biofuel is an organic‚ non-toxic and biodegradable fuel made from everyday renewable resources. It can power your car ’s engine and help the environment at the same time. It doesn ’t
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Experiment No. 7 HYDROLYSIS AND ANALYSIS OF CARBOHYDRATES Methodology Materials: |1% solutions: | conc. H2SO4 | |glucose‚ fructose‚ maltose‚ sucrose‚ lactose‚ |Molisch reagent | |agar-agar‚ gum arabic‚glycogen‚ cotton‚ |I2 in KI solution (Lugol’s
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Over 100 million animals are burned‚ crippled‚ poisoned and abused in U.S. labs every year. 92 percent of experimental drugs that are safe and effective in animals fail in human clinical trials because they are too dangerous or don’t work. Labs that use mice‚ rats‚ birds‚ reptiles and amphibians are exempted from the minimal protections under the Animal Welfare Act (AWA). Up to 90 percent of animals used in U.S. labs aren’t counted in the official statistics of animals tested. The
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Directions. Review these questions prior to viewing the film and then after the film formulate your responses to these questions. YOU MUST WRITE IN COMPLETE‚ GRAMMATICALY CORRECT SENTENCES OR POINTS WILL BE DEDUCTED! This is a word document so you can type as much as you would like‚ if you need more room than I provided you have the ability to expand your response. There are actually 10 questions you need to answer‚ please make sure you read these carefully and appropriately respond. 1. When
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A. Water boils at 100°C at sea level. If the water in this experiment did not boil at 100°C‚ what could be the reason? The reason why water did not boil at 100°C could be because we are not at sea level; the pressure could be lower. B. While heating two different samples of water at sea level‚ one boils at 102°C and one boils at 99.2°C. Calculate the percent error for each sample from the theoretical 100.0°C. 1st sample 1.96% error 2nd sample 0.81% error C. An unknown
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