The theory of atoms and atomic history have been changing throughout history. The atomic theory has had many factors changed and restated to go along with the more recent discoveries. Today, we know all atoms have electrons, protons, neutrons, and of course, the nucleus. Those are a few of the fundamental terms we use to understand the basic structure of an atom. Those are just the simple building blocks of an atom. There is also a electron cloud that is around the nucleus. It was thought to have
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After performing and collecting data from the James Bond Lab, we were able to determine that substances 1 and 7 are ionic bonds, 9 and 12 are polar covalent, 13 is metallic, and 16 is nonpolar covalent. First we came to the conclusion that #1 and #7 have characteristics of ionic bonds. Ionic bonds are conductive and soluble in water, and they also have high melting points. Ionic bonds are polar, and so are water molecules, which makes them interact. This is because polar solvents dissolve polar solutes
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The purpose of this experiment was to determine the specific heat of an unknown metal we were give. With this specific heat 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
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Atomic Mass as a Quasi-Periodic Trend Atomic mass is the mass of an atom, or the number of protons and neutrons in an atom. Every element on the Periodic Table has an atomic mass that is recorded as either an average decimal or a whole number. There are some numbers on the Periodic Table that show patterns or trends. When a pattern is present on the entire Periodic Table then it is called a Periodic Trend. If it is only present in a section or sections of the table it is a Quasi-Periodic Trend
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Jessie Harrell Hazardous chemical project Introduction: One would never expect the everyday products they use could be extremely detrimental to their health. This is what has made triclosan so devastating. Originally crafted for use in hospitals in the 1960’s with the chemical composition shown in the image on the right, Triclosan made its way into products on the market soon after (Brouillette, 2016). Triclosan, while used to protect people from bacteria, actually has very adverse effects after
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For the Identification of an Unknown Compound lab, the physical properties, along with the IR and the H1 NMR will be used to determine the molecular structure and identity of the unknown compound. For the physical properties, the smell, color, state, solubility and the refractive index will be used. Then, the IR and H1 NMR be obtained using the unknown compound given during the lab. The IR and H1 NMR will play a major role in determining the molecular structure of the compound because the stretches
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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 active spot of the enzyme
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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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Christian Rodriguez Mrs. Gentry AP Biology September 27, 2015 Lab Abstract Enzymes are proteins produced by living cells. In an enzyme, the substrates bind with the active site of an enzyme, breaking them down into other molecules. Enzymes acts as catalyst which lower the reaction energy and allows it to take place in less time and at lower temperatures. Enzymes can be used in a reaction without actually being used up; therefore, they can be used reversibly. Temperature, salt concentration, substrate
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A miniscale diels-alder reaction was performed between the conjugated diene 2,3dimethyl-1,3 butadiene and a substituted alkene such as maleic anhydride in order to produce a substituted cyclohexane. The substituted cyclohexane produced was 4,5-dimethyl-4-cyclohexene-cis-1,2-dicarboxylic acid anhydride. A diels- alder reaction does not have an intermediate state, meaning that bond breaking and bond making occurs at the same time. Heat needs to be applied in order for the reaction to occur and it is
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