Finish Line & Beyond Science Class 9th Matter in Our Surroundings Characteristics of Particles of Matter States of Matter Effect of Change of Temperature Effect of Change of Pressure www.excellup.com ©2009 send your queries to enquiry@excellup.com Finish Line & Beyond Introduction Everything in this universe is made up of material which scientists have named “matter”. The air we breathe‚ the food we eat‚ stones‚ clouds‚ stars‚ plants and animals‚ even a small drop of water or a particle
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Determination of Molar Mass by Vapor Density One of the properties that helps characterize a substance is its molar mass. If the substance in question is a volatile liquid‚ a common method to determine its molar mass is to vaporize it and apply the ideal gas law‚ PV = nRT to the data collected. Because the liquid is volatile‚ it can easily be converted to a vapor. Volatile substances are usually composed of nonpolar molecules. As a result the molecules have primarily London dispersion forces and very little
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Chemistry 1211 Prof. Dan Schwartz Exam #2 Thursday‚ 3/13/2003 7:00 – 8:30 P.M. There is a single correct choice for each question. Answer all questions on the Scantron sheet by filling in the proper bubble with a #2 pencil. If you change an answer‚ erase the undesired mark thoroughly. Be sure to fill in the boxes for your student number‚ name and lab section; then correctly fill in the corresponding bubbles beneath them. A periodic table and other useful information are attached to the back
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WHAT IS FLUID MECHANICS ? FLUIED: Any thing whose particles can move easily from one place to another that means shape can be easily changed upon the application of negligible force. MECHANICS: Study of response of bodies upon the application of force. FLUID MECHANICS : Fluid mechanics may be defined as the branch of engineering science which deal with behavior of fluids under the condition of rest and
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enough hydrogen peroxide from the bottle to cover the liver in glass “E”‚ add a little more. Pour the same amount of water into tube “C”. A simple test for the presence of hydrogen gas is to hold a glowing wooden applicator stick at the mouth of the test tube or in the bubbles forming at the surface of the liquid. Hydrogen gas produces a popping sound. A simple test for the presence of oxygen is to hold a glowing applicator stick in one or more of the bubbles inside the tube. If oxygen is present‚ the
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substance with‚ 1.5 ml of H2O2‚ 1.5ml of H2O and different amounts of enzyme drops‚ to determine how much oxygen gas is produced during the reaction since the pressure of the test tube will get higher as more oxygen gas is accumulated during the reaction. 2) If more drops of the enzyme are added to the substance with‚ 1.5 mL of H2O2 and 1.5mL of H2O‚ the reaction will accumulate more oxygen gas which will lead to an increase of pressure (kpa) in the test tube. It will also affect the average slope of
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Arizona Gas Pipeline On July 30‚ 2003 an Arizona gas pipeline owned and operated by the Houston‚ Texas based company‚ Kinder Morgan Energy Partners‚ burst in Tucson and was shut down. A small portion of the 11-mile pipeline‚ which is about five feet underground burst and at least 10‚000 gallons of gasoline spilled; the pipeline rupture spewed gasoline 50 feet into the air. The Arizona gas pipeline cuts through Tucson’s South and West sides en route from El Paso‚ Texas to Phoenix‚ Arizona and
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THERMAL EXPANSION HEAT MYP-5 | Thermal Expansion happens a lot in everyday life. When something is heated and expands this is Thermal Expansion. The way Thermal Expansion works‚ is when it is heated the atoms expand‚ and then when it is cooled it shrinks. Several examples of Thermal expansion is the tendency of matter to change in volume in response to a change in temperature. When a substance is heated‚ its particles begin moving more and thus usually maintain a greater average separation
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Boiling point is the temperature at which gas and liquid phases coexist in equilibrium. At this temperature‚ the vaporization rate and the condensation rate are equal. The liquid and vapor reach a state of dynamic equilibrium: liquid molecules evaporate and vapor molecules condense at the same rate. The boiling point of a liquid is the temperature at which its vapor pressure equals atmospheric pressure. While a gas is forming‚ the vapor pressure within the gas bubbles equals the external pressure
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name section date EXPERIMENT: Solubility and Solubility Curves Fill in all the information in boxes highlighted in yellow ! Use rules of significant figures; include units with each result. Data Table 1: Experimental Data Experiment Stage Total Mass of NH4Cl (g) Volume of Water (mL) Crystallization Temperature (°C) Convert to: g NH4Cl 100 mL H2O 1 2g 5.0 44°C 40g NH4Cl 2 2.2g 5.0 50°C 44g NH4Cl 3 2.4g 5.0 57°C 48g NH4Cl 4 2.6g 5.0 61°C 52g NH4Cl 5 2.8g 5.0 66°C 56g NH4Cl Data Table 2:
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