Ammonia and Hydrochloric Acid Lab Chemistry 1 Abstract The straw should be cut shorter to 8 cm in order to make the solid ring appear in the center of the straw. We achieved our goal‚ cutting the straw caused the gases to not have to go as far‚ and meet in the middle. Background The particles in a gas are very loose and tend to move around a lot very quickly. The particles in a solid are very compact and vibrate but don’t really move very much. The particles in a liquid however are more
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Measurements Lab Name Length Measurements – Follow the Instructions in the Lab Manual and fill in your data in the tables provided. Data Table 1 – Length measurements |Object |Length (cm) |Length (mm) |Length (m) | |CD or DVD |12.00 |120.0 |.1200 | |Key
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Kristen Sierman Lab Report: Experiment #7 Group #4 October 16th‚ 2012 Forces on a Pulley System A. Statement of the Problem The purpose of this lab was to address the following questions: how does the acceleration of a pulley system depend on the mass of the driving objects? And how does the acceleration of a pulley system depend on the mass of the driven object? To achieve this‚ a dynamic track was set up with a string attached to a cart. The string was part of a pulley system (the pulley
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Lab Report Background Information: Magnesium is an alkaline earth metal that has the symbol Mg. Magnesium is a fairly strong‚ silvery-white‚ light-weight metal (one third lighter than aluminum). In a powder‚ it heats and ignites when exposed to moisture and burns with a white flame that is harmful to the eyes. It is difficult to ignite in bulk‚ but once ignited‚ it is difficult to extinguish. Magnesium Ribbon is a long strip of magnesium metal about 3 millimeters wide and 10 meters long with
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5-13-13 Period 5 I. Title: Titration Lab II. Purpose: To determine the concentration of an acid or a base exactly by neutralizing the acid or base with an acid or base concentration. III. Materials: The materials needed are a burette‚ boat dish‚ soap‚ beaker‚ ring stand‚ clamp‚ funnel‚ phenolphthalein (indicator)‚ scale‚ 250 mL flask‚ distilled water‚ stirrer‚ acid‚ and base. IV. Procedure: This lab was done in two days. On day one the first thing that was done was
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Chemistry 12 Acetylene Lab March 8th‚ 2013 Hypothesis If the amount of gas is increase‚ it would have a fully combustion because it contains more carbon ions after the combination. Observation % of gas in the test tube ( approximately) % of O2 in the test tube (approximately) Black soot What kind of sound is produced? Trail# 1 70.00% 30.00% Yes (Whole test tube) “Puff” Trail# 2 50.00% 50.00% Yes “Puff” Trail# 3 10.00% 90.00% Few( head of the
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The purpose of lab number thirteen was to examine the response of the daphnia to a chemical stimulant. Also examined was how human resting heart rates differed from the daphnia’s. Stimulants are any substances that raise the levels of activity in the body. Stimulants could be a number of things such as physical or chemical. Physical stimulus usually deal with something that affects the five senses such as sight‚ hearing these could be attributed to loud noises or too much light going into your eye
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Name Lab‚ Week #1 BALANCE LAB Introduction Several instruments are used for determining the mass of a chemical; these instruments are called “balances.” However‚ different balances have different measurements‚ meaning that some balances are more accurate than others. Moreover‚ there are several techniques that are used or practiced in order to obtain an accurate measurement. The two techniques are direct weighing and weighing by difference. Direct weighing simply means to read the mass
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Margaret E. Vorndam‚ M.S. Version 42-0038-00-01 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 this information in an editable
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graph. Be sure your graph has all of the appropriate titles and units. Analysis Questions: 1. For this experiment‚ what were the independent variable and the dependent variable? What was the control? What were some constants in this lab? 2. Calculate the average rate of water loss per day for each of the treatments. (Humidity‚ Light‚ Fan‚ Dark‚ Room or control). 3. Explain why each of the conditions causes an increase or decrease in transpiration compared with the control
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