I placed a small amount of Mossy Zn in the test tube and then added HCL. I used the rubber stopper and a pipet bulb to collect the Hydrogen gas synthesis. I filled the pipet bulb with water and placed it over the rubber stopper and waited for the H2 to completely displace the water. Once it had displaced the water‚ I removed the bulb and gently squeezed it into the match flame. There was a very audible “pop” and I observed the combustion of the H2. (Step 1 cont.) I filled another pipet bulb with
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Observations and Chemical Changes By: Andre the Giant Higgson 02/19/14 CHE 107 E1 Intro to Chemistry 1 Objective Certain Chemicals like Bromthymol blue and Phenolphthalein can be added to other chemicals to determine acidity or basicity. Other reactions can be observed as well when different chemicals are added to each other. Procedure This experiment involved placing drops of specified chemicals into a well on a 96well plate. Each well number was recorded along with question number and name of chemicals involved
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petri dish. There was one growth that was a dark grey colour with a mottled appearance‚ another that was a white colour with a mottled appearance‚ and finally one that was a tan colour with a bubbly appearance. Water: There is a small and very stale pond near my house that I took the water sample from. This was by far the most disgusting of the three observations. The growth I observed looked like a very dark Picasso painting. There was a black coloured colony that had a fuzzy appearance‚ there was
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Section: Bio 202 labpaq rep 01 LAB REPORT: ENDOCRINE SYSTEM You must get all parts of the question correct to get credit for the question Step 1 (Can be observed on the following slides‚ either from your lab kit or from the Labpaq web site (http://www.labpaq.com/ex-1-endocrine-system)). List the following: · Location in the body of the following structures · Slide #/location observed · One hormone secreted by each Please pay special attention to properties like shapes‚ sizes
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Qualitative Cation Tests Peter Jeschofnig‚ Ph.D. Version 42-0194-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing
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Hardness Tests and Charpy Impact Test Objectives: 1) To compare the hardness between mild steel‚ carbon steel through Vickers Hardness Test. 2) To compare the hardness between High Quality Carbon Steel and ASSAB steel through Rockwell Hardness Test. 3) To compare the hardness between carbon steel and mild steel through Brinell Hardness Test. 4) To study the differences between mild steel and carbon steel upon Charpy Impact Test. Introduction: Hardness is a measure of the resistance
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The micro-hardness test can measure the case to core depth parts. Micro-hardness testing is required where the superficial hardness test is not conceivable due to material’s small geometrical shape. The welded part we were going to examine‚ experienced the similar criteria since the welded bead of the joint was way too small. To test the hardness of our welded area we had gone through a micro-hardness test using a Shimadzu micro-vicker hardness testing machine. In the following
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Observations of Chemical Changes Purpose/Hypothesis: To observe how acids react with bases and examine reactions of common household cleaners and the macroscopic changes these chemicals undergo. I expect for each solution to react differently when mixed with acids and bases. Procedure: I have a well-plate-96‚ a piece of white and black paper‚ and the chemicals from the Observation of Chemical Changes Experiment Bag. I used a different well for each combination of solutions. I placed two
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TITLE Hardness Tests And Charpy Impact Test OBJECTIVE 1. To compare the hardness of the carbon steel‚ mild steel and ASSAB steel using three different hardness tests‚ which are Vickers Hardness Test‚ Rockwell Hardness Test and Brinell Hardness Test. 2. To study the hardness of mild steel‚ carbon steel and ASSAB which is an important in engineering to design structures or components that related in mechanical properties 3. To determine the resistance of carbon steel and mild steel
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WATER OUR LIFELINE Water is a transparent fluid which forms the world’s streams‚ lakes‚ oceans and rain‚ and is the major constituent of the fluids of living things. As a chemical compound‚ a water molecule contains one oxygen and two hydrogen atoms that are connected by covalent bonds. Water covers 71% of the Earth’s surface.[1] It is vital for all known forms of life. On Earth‚ 96.5% of the planet’s water is found in seas and oceans‚ 1.7% in groundwater‚ 1.7% in glaciers and the ice caps of Antarctica
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