Environmental Health Sciences Center Community Outreach & Education Program CHROMATOGRAPHY (Adapted from: Forensic Science Activities. University of Colorado Boulder Hughes Initiative. .) DESCRIPTION: Students will use paper chromatography to separate ink molecules and identify the pen used on an unknown sample of handwriting. Students will graph and analyze data they collect using paper chromatography. PURPOSE/GOAL: Students will be able to: • Gain understanding of the purpose of chromatography
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after words of the Holy Bible”‚ “Lobgesang‚” was originally created to celebrate the 400th anniversary of moveable type. Although the composer left no indication for the piece being his second symphony‚ editors posthumously published it as “Symphony No. 2.” He divides the work into two sections: a symphonic prelude and a larger cantate section. The latter half consists of nine movements for chorus and soloists. The lyrics of the vocal movements concern the praise of God and mankind’s journey to enlightenment
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____________________________________________________________ __ Purpose of this Lab What is the goal of this lab? What question are you trying to answer‚ or what problem are you trying to explain? Hypothesis After reading the lab instructions - but before starting the lab - record your best “educated guess” about each experiment: Experiment 1: Which method of finding the density give you the least percent error and why? Experiment 2: After completing the first experiment‚ answer this question. Which block
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In Act 2‚ Mary Warren‚ John and Elizabeth Proctor’s maid‚ Mary‚ returned back to their house to announce that she was an official of the court for the witch trials. She said that thirty-nine people were in jail and Goody Osburn will be hung because she did not confess to the witchcraft. Mary told them that Elizabeth was accused‚ but she defended Elizabeth before the case was dismissed. Elizabeth then realized that Abigail wanted to take her place as Proctor’s wife‚ and that she was going to get executed
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pH and Chromatography Lab Report Kevin Rivera Biology Mr. Langley 2C 10/7/13 Introduction In this lab‚ of pH and Chromatography‚ in the pH aspect of the lab we are trying to figure out the pH level of certain chemicals by writing down of known solutions to find the type of unkown solution using pH standards. In the Chromatography‚ we are trying to separate the chemicals using water and a piece of paper. Methodology Materials: Safety Goggles pH indicator & pH indicator key
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Lab Report: Scientific Method Your Name: Alyssa Melincoff Purpose of this Lab What is the goal of this lab? What question is it trying to answer‚ or what problem is it trying to explain? To find out how table salt affects the boiling temperature of water. Hypothesis After reading the lab instructions - but before starting the lab - record your best “educated guess” about what will happen in the experiment. What hypothesis can you generate about the effect of adding salt to water? Adding
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whereas TSA contained enzymatic digested casein and soybean meat‚ which the component consider much complicated than YPD. This indicated that G. antarctica PI12 brew better in YPD than in TSA. Aerobic and anaerobic analysis of Glaciozyma antarctica PI12 From the aerobic and anaerobic analysis (Figure 1C)‚ the result showed that the growth of G. antarctica PI12 was ameliorated with oxygen. The blue line indicated the growth of G. antarctica PI12 with oxygen and the red line indicated the growth of G.
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Density Lab Partners: Betty Alcaraz Date: 9/10/13 Teacher: Wright Class: 7th period Introduction/Purpose: To determine the densities of unknown substances. Pre-Lab: 1. Which is heavier‚ a pound of feathers or a pound of lead? a. A pound of lead. 2. What is the density of a mineral if 427 g of the mineral occupy a volume of 35.0cm3? b. 12.2g/cm3 3. The water level in a graduated cylinder stands at 20.0 mL before and at 26.2 mL after a 16.74 g metal sample
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Dylan McFarland 9/15/14 Honors Chemistry Richardson Lab: Measuring the Density of Pennies Pre-Lab Questions: 1. The equation that relates density‚ mass‚ and volume is: density = mass / volume. 2. All substances have unique densities‚ so if you are able to find the density of a substance‚ you can properly identify it. 3. We measure irregular-shaped objects with the use of water displacement because it would be nearly impossible to get the exact measurements
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AP BIOLOGY Lab 5 Cellular Respiration Objective: To calculate the rate of CR from the data. To then relate gas production to respiration rate. Then test the rate of CR in germinating versus non-germinating seeds in a controlled experiment and then test the effect of temperature on the rate of CR in the germinating versus non-germinated seeds in a controlled experiment. Analysis: 1. The CR is higher in the germinating peas in the cold water rather than in the beads or non-germinating peas
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