TEABAG EXTRACT AS AN ALTERNATIVE FOR INK An Investigatory Project Chapters 1- 3 Submitted by: Alfonso‚ Manuela Fairbanks Garcia‚ Tonica Paga Cho‚ Jung Hun Lat‚ Manuel Miguel Feliciano November 2013 Chapter I Introduction A. Background of the Study The group will conduct the study because the group noticed that teabag extract is dark in colour and it can be use to make ink‚ and also the group noticed that teabags are made from natural resources. Some kinds
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Aim: To know the procedure of measuring the accurate mass of a solid To calculate the number of moles of an unknown mass from its mass and molecular mass To know how to dilute a solution and the effect of dilution on the solution’s absorbance Materials: Copper Sulfate Coloured solution – Potassium Manganate (KMnO4) Hotplate Method: Part A: The Formula of Hydrated Copper (II) Sulfate Firstly‚ about 1.0 g of hydrated copper (II) sulfate was put in the weighing bottle and the colour
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Laboratory Report 1 Title : Accurate Measurement of Mass and Volume Part A: The Formula of Hydrated Copper (II) Sulfate Aim: The objective of this experiment is to find out the accurate mass of a solid and to calculate the moles of an unknown. Materials: The materials used in this experiment are Hydrated Copper (II) Sulfate‚ weighing bottle‚ analytical balance‚ laboratory balance‚ casserole‚ spatula‚ and hotplate. Methods: First‚ approximate 1.0g of hydrated copper (II) sulfate was
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TITLE: THE EFFECT OF HEATING DIFFERENT SUBSTANCES INTRODUCTION: In this exercise‚ it was required to observe carefully what happened when certain substances were heated in a burner‚ and to note the appearance of the residue after heating. AIM: To observe the effects of heating different substances. MATERIALS: Hard glass test tubes Powered samples of Lead (II) nitrate Copper (II) sulphate Ammonium chloride Zinc sulphate Basic copper (II) carbonate‚ CuCO3. Cu(OH)2
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Determining an Enthalapy Change of Reaction Purpose of Experiment The purpose of this experiment is to determine the enthalapy change for the displacement reaction: Zn(s) + CuSO4(aq) Cu(s) + ZnSO4(aq) Hypothesis With this experiment I can also not make a hypothesis‚ because we did actually not do the experiment‚ but we were told that the temperature would make a sudden drop ‚ but we can measure the ΔT of the surrounding. The reaction is endothermic because the system will take in energy
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I. Title: Reaction of Metals II. Problem: The purpose of the experiment was to determine if and how different metals react to different solutions. III. Hypothesis: IV. Materials: Dropper‚ Beakers‚ wax pencil‚ Goggles‚ eight test tubes‚ a rack for the tubes‚ three strips of Zinc‚ two strips of Copper‚ three strips of Magnesium‚ steel wool‚ Lead nitrate‚ Silver nitrate‚ Copper sulfate‚ Magnesium chloride‚ Zinc chloride‚ Sodium chloride‚ and Potassium. V. Procedure: In tube 1 add five
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Analysis of a Hydrated Crystalline Compound Katie Sanders Science Block 3 February 29‚ 2012 Title: Analysis of a Hydrated Crystalline Compound Purpose: The purpose of our experiment was to determine the amount of water in copper sulfate pentahydrate expressed as a percent. Hypothesis: I think that bluestone crystals are 20% water‚ because it’s called pentahydrate (penta means five) and 1/5 of 100 (since it’s expressed as a percent)
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Zn(s) + CuSO4(aq) ------ Cu(s) + ZnSO4 (aq) The enthalpy changees for two different reactions will be determined practically. In the first‚ experiment delta H will be determined directly and account will be taken of heat losses by extrapolation of an appropriate graph. The second experiment involves teh inderect determination of an enthalpy change using Hess’ Law. The temperature can be measured manually but this experiment is ideal for using a data logger. In the first experiment we are trying
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Formula of a Hydrate Lab Design: Problem: What is the chemical formula for a hydrated copper (II) sulphate compound? Controlled Variable: The mass of hydrated copper (II) sulphate. Responding Variable: The mass of dehydrated copper (II) sulphate‚ mass of H2O Materials: Ones on the handout + Hot plate. Procedure: 1. Mass 3.00g of hydrated copper (II) sulphate using electronic balance 2. Measure the mass of a thin‚ crucible dish using electronic balance 3. Gently pour hydrated
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& Worksheet: Acids‚ Bases & Salt Name : __________________________________________________ ( ) Class : Secondary 3 Maju/Cemerlang Date : ______ August 2012 Acids Definition: Substances that release hydrogen ions (H+) when dissolved in water. Strong Acids | Weak Acids | Chemical Name | Chemical Formula | Organic acids such as citric acid‚ ethanoic acid. | Hydrochloric acid | HCl | | Sulphuric acid | H2SO4 | | Nitric acid | HNO3 | |
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