Bubbling Cabomba pondweed Teaching Notes Introduction Like many other water plants‚ Cabomba has specialised tissue called aerenchyma that allows gases to diffuse inside the plant. Aerenchyma provide buoyancy and allows oxygen transport to the submerged roots that may otherwise be in hypoxic (low oxygen) conditions. If you cut through the aerenchyma‚ oxygen can escape. This can be made use of this in the classroom to show how the rate of photosynthesis is affected by light intensity or by
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5. Calcite A Report By: Shameka King December 4‚ 2012 SEN 1 Mr. Bibula 2. Calcite was discovered in 1852 by a mineralogist by the name of John P. Calcite. Calcite is a carbonate mineral that is usually white or colorless‚ but can have variety of colors due to impurities. It is one of the world’s most important minerals and is the most common. Calcite is one of the softest minerals and can be found in sedimentary and metamorphic rocks
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Thursday 9/29/11 3:00pm Michaela Howard Partner: Craig Delancy Separation of a Mixture Containing Calcium Carbonate and Naphthalene Objective: Finding a method to successfully separate a mixture of calcium carbonate and naphthalene. Properties to be considered: Calcium Carbonate Naphthalene Solubility in water slightly insoluble Solubility in ethanol insoluble partially Melting point 825 degrees C 80.2 degrees C Boiling point decomposes 218 degrees
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1) What is the role of calcium ions during contraction of a skeletal muscle? Calcium is an important element for live. Calcium is found in the bones of animals and humans. In muscle contraction is produce as a result of Calcium ions ‚ Ca2+‚ It comes from rapid release from the cisternae of the sarcoplasmic reticulum which cause a chemical reaction between ATP and the myofilaments. Another important function of Calcium ions occurs during the state of resting muscle. During the state of resting
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Hypothesis: The higher the concentration of hydrochloric acid‚ the faster the reaction will take place because there will be more hydrochloric acid particles to collide with the marble chip particles therefore resulting in a quicker reaction. The lower the concentration‚ the weaker the reaction will be as there will be fewer particles so less chance of a collision and a lower rate of reaction. Equipment: Conical flask – to hold the hydrochloric acid and marble chips Boiling tube – to hold
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I. INTRODUCTION * Background of the study Nowadays our country is facing economic crisis and also pollution that makes our Environment damage so we decided to make funky colored sidewalk egg chalk as our science investigatory project. So based on our title name we will use eggshell not any eggshell because we will use chicken eggshell as an alternative ingredient for sidewalk chalk‚ we believe that this study will be great and popular because as of now children‚ students and teachers consume
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A Separate Peace Obstacles after obstacles came in the path to success. In the novel A Separate Peace‚ John Knowles revealed a very strong idea through one of his characters. Through Gene it was revealed that weak individual who once was weak morally and mentally can become a strong and a more matured person. John Knowles revealed this idea through Gene’s perspective; symbolism; and also Gene’s speech/action. Gene had proved many things through only his perspective. He had intriguing
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"Over one hundred and fifty years ago‚ in 1846‚ two natives of New England took the first step toward establishing an industry that has since become of national importance. Baking soda‚ which is a trade name for bicarbonate of soda‚ is now found in practically every kitchen throughout the country and is regarded a necessity by millions of Americans. It was first prepared for commercial distribution by two early New Englanders‚ John Dwight of Massachusetts and his brother-in-law‚ Dr. Austin Church
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Limestone Grinding Mill for sale-Clirik professional grinding mill plant Application of limestone grinding mill ： HGM Series limestone grinding mill is the equipment specializing in producing fine and superfine powder of non-inflammable‚ non-explosive and brittle materials with Mohs’s hardness under six‚ such as calcite‚ chalk‚ limestone‚ dolomite‚ kaolin‚ bentonite‚ talc‚ mica‚ magnesite‚ illite‚ pyrophyllite and vermiculite‚ sepiolite‚ attapulgite‚ rectorite‚ diatomite‚ barite‚ gypsum‚ alunite
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This experiment is to show how much carbon dioxide is produced during the reaction between an acid (hydrochloric acid) and marble. Equipment: Hydrochloric Acid (20ml) - 0.5M‚ 1M‚ 2M Marble Chips (2g per test) Large Measuring Cylinder Plastic Bowl (3/4 full of water) Rubber Tubing Glass Conical Flask Stopwatch Method The first thing that we did was fill the plastic bowl with water. We only filled it up 3/4 of the way because otherwise the water displaced into
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