Lab Experiment (Water) Question Does Different volume of water affect the dissolving speed of 5 mg of sugar? Aim My aim for this lab report will be to find out how the volume of water can affect the dissolving speed of sugar by doing an experiment and test different volumes of water and test it with the same variables. Hypothesis I think the more amount of water will cause the solute to dissolve faster. This is because as there is more water‚ then there will be more solute to be
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LAB ACTIVITY 1 MEASUREMENTS IN SCIENCE: MASS‚ VOLUME‚ AND DENSITY Purpose: The purpose of this experiment is find the density of two metals using their mass and volume. Introduction: The purpose of the experiment that was conducted was to measure and calculate the density of two different metals. Density is an important characteristic of a material. The density of an object shows how much mass is contained in the unit volume. To calculate the density of metals the experimenters had to find
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precisely‚ the volumetric mass density‚ of a substance is its mass per unit volume. The symbol most often used for density is ρ. The unit of density is kg/m ². Here is the formulae of density: Density = Mass (kg) Volume (m ³) Hypothesis: According to PubChem from the internet‚ it states that the density of water is 999.97 kg/m³ . Variables: Manipulated Variable Method of controlling Volume of water The volume of the water is measured by dropping water into the cylinder. Random
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maintains the body temperature and metabolizes body fat. If your body doesn’t receive enough water‚ it will take water from other areas and this causes the blood to thicken. Plants also need water to grow and survive. Plants also need water for photosynthesis‚ to be able to create their food. The water travels up to the plant’s stem‚ where photosynthesis takes place. Water is
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poured into the Hydrogen peroxide filled flask. When the catalase and Hydrogen peroxide meet a reaction will occur and the hydrogen peroxide will be broken down into water and oxygen. The oxygen released from the reaction will be recorded by the Gas Pressure sensor. This step will be repeated five times for each necessary trial‚ then the next catalase extract will be
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Effects of Alcohol‚ Caffeine‚ and Temperature on the Heart Rate of Daphnia magna Joseph Ezra Gallo BY124L MW 8:30-11:30 Introduction Ectothermic animals are animals whose body temperature is affected by their surroundings. This means that if the environment is cold the animal will be cold. If the environment is warm the animal will be warm. This is because the animal doesn’t have the capability of regulating its body systems to keep a constant body temperature. When an ectothermic animal is cold
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representative of normal conditions in the cell which are isotonic meaning everything is balanced. Membranes are sensitive not only to chemical changes but to temperature changes as well as . They are sensitive to extreme temperatures in both directions of the scale. Extremely high temperatures make that molecules in the cell move faster and collide into themselves violently. Extremely low temperatures causes water in the cell to crystallize and form ice. The formation of ice can cause the cell to expand and sometimes rupture the
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Research & Design in Psychology / G Faculty of Health‚ University of Canberra LAB REPORT COVER SHEET Instructions: 1. Complete these details and the declarations electronically. 2. Insert this sheet at the start of your lab report. 3. Submit the entire assignment‚ including this coversheet‚ as one file via the lab report drop-box on Moodle. 4. For more information‚ see Lab report guidelines. |STUDENT NAME:
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Enzymes are catalytic proteins that speed up chemical reactions by lowering the activation energy of the reaction. our body cells depend highly on enzymes to complete many important functions‚ such as digestion and metabolism. Enzymes are selective‚ in which each enzyme can only speed up a specific reaction. There are molecules that enzymes work with called substrates. substrate bind to an area of an enzyme called active site. There is specificity between the enzyme and substrate that react with
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Place receiving vial 1 on ice to collect the distillate 6. Start the distillation by piling up hot sand around the distillation flask with a spatula 7. Adjust the sand so that distillation occurs at a rate of 2 drops per minute. 8. Record the temperature versus the number of drops. 9. Collect up to 1ml in the 1st vial. Then 1 ml in vial 2 and vial 3. -Post Distillation: 1. Add 2-3 calcium chlorite pallets for the first vial. 2. Carry our a chromic acid test for each of the 2 vials 3.
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