Introduction. The following is an experiment into temperature change in an exothermic reaction taking place between Sodium hydroxide (NaOH) and Hydrochloric acid (HCl) and also how the concentration of the acid will vary these results. The characteristics of the reaction feature a neutralisation‚ an energy change (shown as a temperature change) that is usually exothermic (gives out heat). The reaction of neutralisation is exothermic because of the bonds being broken and made in the reaction. When
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is one of the main factors in producing energy in individual’s bodies. The experiment conducted was to test how different temperatures effected the catabolizing of fungal and bacterial amylase‚ as well as the optimal temperature needed for the enzyme to correlate with the bacteria and fungi. The enzyme’s break down within the starch was observed through different temperatures and time periods. The Starch was placed in both the fungal and bacterial amylase where they were then placed on spot plates
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most dangerous threat of all is climate change. Climate change is the change in global or regional climate patterns. Recently‚ climate change has contributed to the heightened carbon dioxide levels in the atmosphere‚ posing serious threats to the preservation of the whole entire planet. Climate change poses a threat to the mojave desert because of heightened carbon dioxide levels‚ dried out water supplies and the increase of invasive species. Climate change causes the carbon dioxide levels in the
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Investigate the effect of concentration on the rate of a reaction Research question: To what extent does the concentration of hydrochloric acid affect the rate of the following reaction: 2 HCl(aq) + CaCO3(s) → CaCl2(aq) + H2O(l) + CO2(g) Data Collection and Processing: Table1: Different volumes of Co2 gas produced by Different concentrations of HCL acid. Volume of CO2gas formed from 5 different concentrations of HCL acid ±0.5ml 5 different concentrations of HCL acid (Mol) ±0.5ml Time (sec) ±0
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An Increase in Light Intensity Increases the Rate of Respiration M. Chauntise‚ S. Shaika‚ R. Shantal INTRODUCTION The sun plays a vital role in sustaining an entire living world whether indirectly or directy using a transformation process called photosynthesis. This process assists in nourishing plants and keeping them alive. For example‚ trees grow very tall in the rainforest where there is an abundance of water in order to reach as much light as they can. For this reason‚ in order to survive the
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Lesson Plan Title: Factors that Affect Rate of Dissolving and Solubility Overview‚ Expectations and Rationale 1. Big Ideas: • Properties of solutions can be described qualitatively and quantitatively‚ and can be predicted 2. Ministry Expectations: Scientific Investigation Skills and Career Exploration A1.1 - formulate relevant scientific questions about observed relationships‚ ideas‚ problems‚ or issues‚ make informed predictions‚ and/or formulate educated hypotheses to focus inquiries
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What affect does the concentration of sugar have on the rate of respiration of yeast? Apparatus: 1. Stopwatch with a resolution of 0.001 seconds 2. 4 test tubes 3. 200 ml of yeast in a beaker 4. 200 ml of glucose solution 5. 500 ml of limewater 6. 2 delivery tubes 7. 1 test tube rack 8. 1 water bath set to 37°C 9. 2 pipettes 10. 3 measuring cylinders with a resolution of 1ml‚ ranging from 0-30ml. 11. 200 ml of water Hypothesis: The higher the concentration
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Introduction: We are conducting this experiment to identify how temperature affects the solubility of salt. To add on‚ by making this experiment we could see how temperature affects the solubility of a substance‚ the maximum number of solute particles that can dissolve in solvent particles. Also‚ how by changing the temperature we could see how if the solubility of the solute would either increase or decrease. This experiment connects with information we learn in class because of how in class
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The Effect of Different Genres of Music on the Growth Rate of Garden Cress AIM The purpose of this experiment is to explore upon the possible correlation between musical stimulus and the growth rate of Lepidium sativum‚ commonly known as Garden Cress. It also aims to discover which genre amongst classical‚ jazz‚ and rock has the most beneficial effect on its growth rate. PERSONAL ENGAGEMENT The Garden Cress plant‚ better known by its botanical name Lepidium sativum‚ is amongst the many plants that
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Three of the United States Constitution in 1789‚ the extent to which the Supreme Court can affect social change has always been disputable. Scholars developed different definitions of social change and looked in different fields to discuss the Court’s effect. Expanding on their ideas‚ I argue that the Court is successful in generating attention from society to the cases it decides on‚ yet it takes time for changes in public opinion and implementing the rulings. Focusing on three significant cases decided
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