In the lab, All That Glitter, students learned to calculate and differentiate the density of different forms of matter. Students calculated the density of pre-1982 pennies, post-1982 pennies, and an unknown metal sample. In order to complete the lab, students first took ten pre-1982 and post-1982 pennies and carefully dried them. Afterwards, the pennies were placed on a digital scale in order to find the mass. Students then found the volume of the pennies by filling the graduated cylinder with
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added .3 ml of guaiacol and 1ml of turnip peroxidase to the deionized water. After that, we covered it with Parafilm and then began to mix. The next step to the experiment is to observe. After every five minutes, we would observe the color of the reaction , and whether it changed. RESULTS: The information we gathered demonstrates our speculation since it demonstrates that the quickest enzymatic response rate happens when the turnip peroxidase focus is 2%. Our information demonstrates the test
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Introduction: What happens if you put baking soda and vinegar together? It is a chemical reaction where gases are released. The chemical name that makes it change is reactivity. The types of matter that are changing is baking soda and vinegar. The problem is how much baking soda, added to 10ml of vinegar, will cause a film canister rocket to shoot the furthest. I think the 7mLof baking soda is going to go the farthest because there is enough room for the gas or pressure to build up and explode
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perform several different types of reactions against several different changes in temperature in order to monitor the progress of the reaction. These reactions will help us gain understanding of the elements that play into a reacting aqueous solution with an ionic bond: the breaking of the intermolecular forces and use of energy define the direction and product of a chemical reaction. This experiment will reveal how temperatures can either enhance or decrease the reactions rates. Introduction Calorimetry
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experiment, we examined whether or not the speed of the reaction will be influenced positively by an increase of heat to a point where it will not be denatured, but negatively by a decrease of heat. In the second experiment we looked to see if the speed is influenced positively by an increase of enzymes to a point, but negatively affected by a decrease of enzymes. For the third experiment the hypothesis was to see if the speed of the reaction is influenced by the amount of substrate in the environment
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In each part of the investigation, identify the type of change that took place and support it with evidence from your observation table. Test A: A chemical change occurred. I know this because bubbles formed when the two substances mixed. I also know this because a gas was formed, and an indicator of a chemical change is when a new substance forms. Test B: A chemical change occurred. I know this because there was both a production of light, and a production of heat. Also, the change that occurred
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The Grignard Reaction is the addition of an organomagnesium halide, the Grignard reagent, to a ketone or aldehyde to form alcohols1. Grignard reaction are important in organic chemistry because they are relatively easy to perform, and they are one of the few reactions that can form new carbon – carbon bonds. The purpose of this experiment is to synthesize the Grignard reagent, phenyl magnesium bromide, from bromobenzene, and using the synthesized Grignard reagent to react with benzophenone to form
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of the unknown metal we can then determine what the unknown metal is. As for the acid-base reaction experiment we will also be conduction in this lab we will use this acid-base reaction to determine the enthalpy of neutralization of a strong acid-base reaction. By following these precise guidelines in this experiment we can then determine the energy released per mole of water formed in this acid-base reaction. 3. Introduction: For this lab experiment, I sought out an objective to prepare and to determine
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Enzymes are fundamental proteins which act as effective catalysts for biochemical reactions within an organism. Enzymes are distinct from one another; they attach themselves to specific slots on substrates called active sites to lower the activation energy to start the chemical reaction. This is represented by the lock and key model, where the shape of the enzyme directly corresponds to the substrate to carry out a specific job. An enzyme is able to be used until it becomes denatured, or when the
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Enzymes are proteins that are made by living cells. They act as catalysts, speeding up the chemical reaction process, remaining unchanged before and after. They do so by lowering the activation energy, meaning when they are present, less energy is required for the reaction to occur. The enzymes act on a substrate during the process. A substrate is any compound the enzyme bonds with. However, the substrate must match a specific shape for the two to bond properly. This is known as the key and lock
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