The reactivity series is the known series of how metals should react. It places Calcium as the most reactive (of the metals being tested in this experiment)‚ followed by Magnesium‚ Aluminium‚ Zinc‚ Iron‚ Tin and finally‚ as the least reactive (of the metals being tested in this experiment)‚ Copper. However‚ the results this experiment produced did not follow this trend. If the metal that produces the most hydrogen gas is considered the most reactive‚ in this experiment magnesium was most reactive
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Water Study Questions 1. What is the structure of water‚ why is it a dipole and what does this allow water to do? H2O‚ oxygen has negative charge—Water is a dipole because of its geometry and difference in electronegativity between hydrogen and oxygen. Polar nature and geometry of water molecules allow them to form hydrogen bonds with each other and with dissolved hydrophilic substances. 2. What do the terms hydrophilic‚ hydrophobic‚ and amphiphilic mean and what do molecules described
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Carbons 1 and 2 is broken and attached to Carbons 1 and Two is Fluorine‚ creating CH2FCHFCH2CH3 or 1‚2-diflurobutane Whereas the induction of a halogen in excess into a container of Butane will result in a substitution reaction where the electronegativity of the Fluorine causes one of the hydrogens to detach from the parent molecule and attach to the sister Fluorine resulting in Hydrogen Fluoride and CH2FCH2CH2CH3 or 1-flurobutane. The difference is in the fact that the halogen breaks the double
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-Atomic Mass: 195.084 amu -Appearance: Shiny‚ smooth surface‚ silver like‚ solid. Melting point (K): 2045 Boiling point (K): 4100 Valence electrons: (+1)‚ +2‚ (+3)‚ +4‚ +6 Atomic radius (pm): 139 1st Ionization energy (kJ/mol): 868.1 Electronegativity: 2.28 Natural Occurring Isotopes: Six stable isotopes of platinum occur in nature (190‚ 192‚ 194‚ 195‚ 196‚ 198). Information on three additional radioisotopes is available (191‚ 193‚ 197). Location on the periodic table: -Transition Metals
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A solution is a mixture that is the same throughout‚ also called a homogeneous mixture. Solutions are present in nearly every aspect of life. The emulsified smoothie you just drank is a solution‚ the air we breathe is a solution‚ and even the water in the ocean is a solution. The smoothie is a solution because everything is blended together to make one homogeneous mixture. The same goes for air‚ which is a homogeneous mixture made up of around seventy eight percent nitrogen‚ twenty one percent oxygen
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neutrons in their nucleus. 9. The outermost energy level configurations for various theoretical elements are listed below. Match the questions below with the correct theoretical element. ____ 1. 3s1 A. Which has the highest electronegativity? ____ 2. 2s22p6 B. Which has the lowest first ionization energy? ____ 3. D = 2s22p5 C. Which is a noble gas? 10. Convert 4.3 kilograms to centigrams using dimensional analysis. 11. Consider the elements
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(ADHD)” (Methamphetamine drug profile). Methamphetamine is a polar molecular solid that is held together by intermolecular forces like London dispersion‚ dipole-dipole‚ and slightly stronger hydrogen bonds. The molecule is polar due to the electronegativity difference between hydrogen and nitrogen. It also allows methamphetamine molecule to hydrogen bond and thus being stronger than other polar molecular solids that cannot hydrogen bond. Methamphetamine is a polar molecular crystal which makes it
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PHYSICAL PROPERTIES OF THE PERIOD 3 OXIDES These pages explain the relationship between the physical properties of the oxides of Period 3 elements (sodium to chlorine) and their structures. Argon is obviously omitted because it doesn’t form an oxide. A quick summary of the trends The oxides The oxides we’ll be looking at are: |Na2O |MgO |Al2O3 |SiO2 |P4O10 |SO3 |Cl2O7 | | | | | |P4O6 |SO2 |Cl2O
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April 30 2009 ------------------------------------------------- Essay on Water Published by admin at 3:58 am under Example Essays Introduction Water is an essential ingredient for the existence of life as we know it. Biochemical processes occur in aqueous environments‚ many of which use water. Water also plays a significant role in the process of photosynthesis ( 6 CO2 + 6H2O + 672kcal -> C6H12O6 + 6O2 ). Photosynthesis is the most basic and significant chemical reaction on earth‚ providing
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Chemistry Final Study Guide Matter as anything that has mass and takes up space. Significant figures refers to digits that were measured. When rounding calculated numbers‚ we pay attention to significant figures so we do not overstate the accuracy of our answers. Rules: -All nonzero digits are significant. -Zeroes between two significant figures are themselves significant. -Zeroes at the beginning of a number are never significant. -Zeroes at the end of a number are significant if a decimal
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