tension‚ affect the patterns blood makes when it spatters. This lab activity reinforces some of these important physical properties. It could be conducted as a deductive activity in which students are asked to explain the results of the various experiments in terms of water’s physical properties. It could follow‚ for example‚ a lab activity where students compare the properties (drop size‚ evaporation rate) of three different liquids and then precede‚ for example‚ a discussion of the differences
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May 4‚ 2013 In a laboratory experiment‚ a student reacted 2.8 grams of Fe (s) (steel wool) in excess CuSO4 (aq)‚ according to the following balanced equation: Fe(s) + CuSO4 (aq) -> FeSO4 + Cu(S). When the Fe(s) was completely consumed‚ the precipitated Cu had a mass of 3.2 grams. Did the student’s result on this experiment verify the mole ratio of Fe(s) to Cu as predicted by the equation? Answer: yes‚ because the experiment result was 2:1 Calculate the mole ratio
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or vary in some way. By employing both experimental and control groups in an experiment‚ investigators are enabled to rule out the possibility that something other than the experimental manipulation produced the results observed during the experiment. This type of research can be broadly divided into three main types: The Laboratory Experiment‚ The Field Experiment and The Natural Experiment. In a laboratory experiment‚ there is a systematic variation of the independent variables while other irrelevant
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Date Performed: _______ Experiment #: ________ 1. Objectives: Briefly in your own words‚ explain what experiment(s) you performed in the lab. This is similar to the Objectives section list in the lab instruction. But keep it to a small paragraph. [pic] 2. Introduction: Describe the broad goals of the experiment‚ the major principles involved‚ and how you can experimentally check/use them. For example‚ in describing the voltage divider‚ current divider experiment‚ you can describe that as
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The Feeding Behavior of the Protist known as Tetrahymena vorax Abstract The purpose of this experiment was to study the rate of phagocytosis of the specific protist known as Tetrahymena vorax. This certain kind of protist feeds at a normal rate when conditions are normal. We began the experiment of understanding how Tetrahymena feeds at normal temperatures. Doing so‚ we allowed the Tetrahymena to feed at specific time limits and then killed the protist with gluderaldheyde to detect how much
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Once the experiment was over the results showed that the head end was able to retain the learning by classical condition better than the tail end could. There were more positive reactions with the head compared to the tail. It was not a drastic difference‚ but the head it was able to retain the learning slightly better than the tail end did. Not everything goes as planned so there were some experiment where the planarian was lost or it died. Some planaria did not retain the information before it
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evaluation of a person and how we perceive their attributes. The hypothesis of this experiment is one tailed. A person who is perceived as being more attractive will have be given positive personality traits‚ a person who is less attractive. The null hypothesis is that people’s perception of attractiveness will not affect their judgement of that individual’s personality traits. The method that was used was experiment and the design used was independent groups. The Independent Variable is a photograph
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freezing popcorn yield more popcorn? Project Design Plan. This scientific experiment is to gauge the amount of kernels popped when the storage temperatures of the kernels are changed. Does freezing popcorn kernels for 24 hours yield more or less popped kernels than popcorn kernels stored at room temperature? By performing this experiment we can decide how to maximize our food potential. We will purchase six identical brands of popcorn from the local food
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Lab Reports gives the explanation of the experiment done Lab reports are an essential part of all laboratory courses and usually a significant part of your grade. If your instructor gives you an outline for how to write a lab report‚ use that. Here ’s a format for a lab report you can use if you aren ’t sure what to write or need an explanation of what to include in the different parts of the report. A lab report is how you explain what you did in experiment‚ what you learned‚ and what the results
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throughout the experiment? Does the design account for making both qualitative and quantitative observations? Do quantitative observations involve SI measurements? Do qualitative observations include verbal descriptions or measurements with non-standard scales? Does the experimental design allow for the testing of one independent variable at a time? Do you have multiple trials included in your design? If you did not answer YES to all of these---go back and rethink your experiment!!!!! Turn the
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