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Percent Yield of the Precipitate Formed in Calcium Carbonate and Sodium Chloride, While the Room Temperature (23℃) and Drying Time (23h) is Kept Constant. Geetu Lalchandani Mr. Yhard SCH 3UB-01 November 16th 2014 Table of Contents 1.0 Research Question…………………………………………………………………….3 1.1 Introduction…………………………………………………………………………...3 1.2 Hypothesis……………………………………………….……………………………4 1.3 Variables………………………………………………………………………….4 & 5 1.4 Materials………………………………………………………………………………5 1.6 Procedure………………………………
mixture. One example of a homogeneous mixture is air. Air is a homogeneous mixture of gases. Another example of a homogeneous mixture can be seen when you mix a spoonful of table salt or sugar into a glass of water because either the sugar or salt dissolves. If you were to mix dirt or sand and water, a heterogeneous mixture will be formed, not a homogeneous one. (Stewart 2014) A heterogeneous mixture is made up of a non-uniform composition. At least two components of a heterogeneous mixture must have
00296648 Biology HL Trial 1 & 2: 8/4/13 Trial 3 & 4: 10/4/13 Photo credits: Smarties by Andrew Dean, copyright Rebecca Douglas, retrieved 9/4/13 http://rebeccadouglas.photoshelter.com/image/I0000WDNZi_s2W4A Smarties Diffusion Experiment RESEARCH QUESTION How does changing the colour of smarties affect the extent of its passive diffusion? INTRODUCTION Passive diffusion, also known as simple diffusion, is used to describe the exergonic reaction of a substance where the substance passes
more dangerous to our immune system because they are camouflaged and have a harder time being discovered. My group predicted that if S. marcenscens is exposed to crushed garlic soaked filter paper, then the growth of the bacteria would be inhibited more than it would be with the rinsed garlic or water filter papers because it would contain a higher potency of the chemical released from the breaking down of the garlic’s cell walls. Methods To conduct this experiment, the first thing we had to do
reaction, phosphoric acid acts as a catalyst so as to speed up the rate of the reaction. The use of the acetic anhydride cautions us to prematurely use any water so as to prevent any hydrolysis of the acetic anhydride from occurring. Results and Discussion: A 400-600mL beaker was filled with water and placed on a hot plate to create a hot water bath and a
The purpose of this lab is to determine which pigments in a plant support or effect photosynthesis, based on starch production, which wavelengths of light are involved in photosynthesis, and identify plant pigments found in a plant leaf by means of paper chromatography. Life on Earth is dependent entirely on the energy from the Sun, not only to keep the planet at a suitable temperature but also to provide the energy required to sustain life. The energy of the Sun, in the form of photons, is actively
distinguish and identify homogeneous mixture by using the techniques of decantation and sublimation. By performing these techniques, we examined our solutions such as SiO2 (sand), NH4Cl (ammonium chloride), and NaCl (sodium chloride) and mixed H2O (water) with each solution after being heated. After examining our solutions, we made calculations by finding the percent mass of each solution once the experiment was completed. In our findings, we were able to determine the mass of the determined and the