Title: Factors affecting reaction ratesProcedure A: Effect of ConcentrationAim: To investigate how the concentration of a reactant affects the rate of reaction. Hypothesis: The more concentrated the reactant‚ the faster the rate of reaction. Materials: 2M hydrochloric acid solution‚ magnesium wire‚ distilled water‚ 4 test-tubes‚ measuringcylinder. Procedure:1)10mL 2M hydrochloric acid solution is poured into a test-tube using a measuring cylinder. 2)A 3cm length of magnesium wire is added to
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amount of oxygen. The furthest light from the plant led to the least amount of oxygen produced for the three different distances. These results show how the rate of photosynthesis and the by-product produced is increased as the intensity of light is increased. The second part of the experiment reveals that the color of light also has an effect of the rate of photosynthesis. The red light resulted in the greatest amount of oxygen produced and the blue was not too far behind. Green produced the lowest
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For this experiment I am investigating how the light intensity as my limiting factor will have in impact on the amount to oxygen produced‚ to should the rate of photosynthesis.Therefore‚ all the controlled variables must remain constant‚ if not there could be an affect on the accuracy of the dependent variable. The CO2 levels are the same for each trial because before placing the sodium hydrogen carbonate i will weigh it with a measuring scale for 1.5 grams. After completing the five measurements
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Ashley Henderson 2/19/12 4B Written Report SCIENCE FAIR: Optical Illusions Can age affect the way people view optical illusions? Table on Contents ● Introduction ● Abstract ● Hypothesis ● Variables ● Materials ● procedures ● Data ● results ● conclusions ● research paper · Awknowledgements Introduction I. INTRODUCTION- Optical art is a style of art that was created in the 1960’s‚ it creates a series of movements‚ vibrations‚ and
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Total CO2 Evolved by Different Concentrations of Convollaria roots. Actual values are the graduated pipette readings. For CO2 evolved values‚ subtract the initial reading from the actual reading. This is the amount of CO2 accumulated over time. | Time (min) | Tube 1 | Tube 2 | Tube 3 | Tube 4 | | Actual | CO2 Evolved | Actual | CO2 Evolved | Actual | CO2 Evolved | Actual | CO2 Evolved | | (A) | (A-I) | (A) | (A-I) | (A) | (A-I) | (A) | (A-I) | Initial reading (I) | 0.05 | | 0
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question was “How does exercise affect your breathing and heart rate?” and my hypothesis was “If you exercise then your heart and breathing rates will go up because your body needs more oxygen to be circulated so that your body can keep up.”. My hypothesis was correct‚ as proven by my test. My partner‚ Brian’s heart rate when it was resting was 56 beats per second and his breathing rate was 40 beats per second. We made him do jumping jacks for ten seconds and his heart and breathing rates both went up
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Objective To investigate the effect of carbon dioxide concentration on the rate of photosynthesis Introduction Photosynthesis is a process that is essential for every living organism. Organic substances‚ such as glucose‚ are made from carbon dioxide and water by light energy from the sun. The light energy is absorbed by chlorophyll and converted to chemical energy. During the process‚ oxygen is released as a by-product. The rate of photosynthesis is affected by a few of factors‚ including
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affecting Rates of a Reaction (Kinetics) KINETICS DESIGN LAB Research Question: Does the concentration of Potassium Iodide (KI) affect the rate of its reaction with hydrogen peroxide (H2O2) (of a fixed concentration)? Introduction: There are several factors that affect the rate of a reaction. Some of them being Pressure (if the reactants are Gases)‚ Temperature‚ Presence of a Catalyst‚ Surface Area of the reactant‚ and Concentration. According to the Collision Theory‚ during a reaction‚ particles
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Science Investigation Srategy I am ivestigating the reaction of sodium thiosulphate and hydroclohric acid. sodium thiosulphate(aq) + Hydroclohric Acid (aq) --> Sodium cloride (aq) + Sulphur Dioxide (g) + Water (l) + Suplhur (s) Na(2)S(2)O(3) + 2 HCl --> 2NaCl + SO(2) + H(2)O + S The finished reaction of the 2 clear liquids is cloudy.I will use this change from clear to cloudy as an indicator as to when the reaction is finished. By using this change ‚ i can see the effect of changing
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purpose of laboratory assignment 3 was to measure the rate at which a chemical reaction takes place. For the purpose of this lab we measured the rate a balanced oxidation/reduction reaction between iodine‚ hydrogen‚ and bromate ion occurs. The above reaction occurs slowly so we used a coupled iodine clock reaction to measure the rate of the oxidation/reduction reaction because it occurs much faster but is still dependent upon the other reaction. To accomplish this‚ two mixtures were prepared in separate
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