partial negative charge while hydrogen has a partial positive charge. Hydrogen bonding is generally stronger than most bonds bar covalent bonds. Water: Bonding within water molecules occur between oxygen and hydrogen. These covalent bonds mean that the electrons are shared between the oxygen and hydrogen atoms to create a complete valence shell. However‚ electrons tend to spend more time around the oxygen atom due to its higher electro-negativity. This creates a partial positive charge around the hydrogen
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cations and anions a. Extracellular cations: Sodium anions: Chloride b. Intracellular cations: Potassium anions: Phosphates and Protein 7. Within a fluid compartment‚ the total number of positive charges must be equal to the total number of negative charges . 8. Name four of the seven functions given for electrolytes: a. Cofactors for enzymes b. Action potentials in neuron and muscle cells c. Muscle contraction d. Secretion and
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Grades K-5 Pencil Electrolysis Introduction: The process by which we separate the elements hydrogen and oxygen from water is called electrolysis. The word "lysis" means to dissolve or break apart‚ so the word "electrolysis" literally means to break something apart (in this case water) using electricity. It is difficult to break up water into it’s elements lots of energy is needed to do that. Through a chemical means though‚ we can separate the compound of water into the elements that combine to
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destroyed. Dalton’s model of the atom had some problems explaining why atoms would combine or bond‚ which leads to the next great scientist. J. J. Thomson discovered electrons from his experiment using a cathode ray tube experiment. He shot an electric current/ ray through a plate of metal in tube filled with gas. He found that some particulate or small pieces of matter (not energy or light) gathered at the end of the tunnel‚ the positively charged end. So he deducted that it being attracted to
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Reduction/Oxidation Reactions • Oxidation number: The charge that an atom in a molecule would develop if the most electronegative atoms in the molecule took the shared electrons from the less electronegative atoms. • Oxidation numbers are not real; they are only based on assumptions. They are useful bookkeeping tools though‚ and can help us keep track of electrons during a reaction. • The sum of all oxidation numbers in a molecule must equal the charge of that molecule. • Rules 1-4 about oxidation numbers:
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themselves along one side of the oxygen atom‚ causing a slightly positive and slightly negative side. This causes a dipole to occur. Since glass is also polar‚ the water and the glass will be attracted to each other because of their positive and negative charges. In real life‚ adhesive properties are vital for the survival of plants. Water molecules will adhere themselves to cellular membranes of plants and move up the plant to provide nutrients. Without adhesion‚ all the water will remain in the ground as
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JAPS - Mobocharge This device does not really need a DC charger to recharge the battery‚ In other words you need not charge your mobile phone at all. Imagine a phone that charges itself upon continuous tapping on screen. So how does this wonder phone work? This is a TFT capacitive touch screen phone and uses human body heat as electricity to charge the mobile phone. It’s based on the nanotechnology engineering using a micro device called thermoelectric device. The thermoelectric device is
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Shylock and Antonio resent and dislike one another. Firstly‚ Shylock hates Antonio because he is a Christian; secondly‚ because Antonio is a Christian and therefore not allowed to charge interest‚ Antonio undercuts Shylock’s business by lending money without charging interest. The fact that Shylock does loan money and charges interest is another reason for Antonio not to like him. As a businessman‚ Antonio must resent Shylock’s ability to earn extra money by charging interest. We know that Shylock
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The Action Potential Graphics are used with permission of: Pearson Education Inc.‚ publishing as Benjamin Cummings (http://www.aw-bc.com) ** If this is not printed in color‚ it is suggested you color code the ion channels and ions as you go through this topic. Ions channels and ions should be color coded as follows: Red: Sodium ion channels and sodium ions Blue: Potassium ion channels and potassium ions Page 1. Introduction • Neurons communicate over
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The Fruit Battery March 19‚ 2007 7th grade Abstract My objective was to determine which fruit would make the battery for a clock. Procedure 1. Gather all things needed for experiment. 2. Wash hands for safety. 3. Take the clock module and place fruit in the two holders. 4. Remove plastic coatings at the end of all wires with scissors. 5. Take the black cable and tie one end to the Zinc metal contact. 6. Take the blue cable and tie one end to the Zinc metal
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