groups of atoms together and make them function as a unit. A bond will form if the energy of the aggregate is ______than that of the separated atoms. ____________ – energy required to break a chemical bond Bonding involves ________________. 2 Chemical Bonds‚ cont. In general‚ there are three types of chemical bonds: I. Ionic bond: Transfer of electrons from one atom to another. Seen primarily in M + NM. Bond is an electrostatic attraction of of a _______for an ______. II. Covalent
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Potato Cock Borer Test tube Knife Pipette Boiling tube Delivery tube Stopwatch Method: 1. 5.0cm3 of 2.0moldm-3 hydrogen peroxide solution is poured into tube 1. The bug is placed and followed by water to tube 2 to the depth indicated in figure below. 2. Using a sharp knife and ruler‚ 10 pieces of 1mm thick disc of potato are cut. 3.
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as being more relatable at a human level‚ as opposed to an epic tale. Though‚ may I might add‚ the tale is still epic in a timeless sense‚ ‘Spearesy’ uses small-scale settings and conversations to say a thing or two about morality and its effect on life and lives. “ ‘Murder most foul‚ as in the best it is; but this most foul‚ strange’‚ ‘Haste me to know’t‚ that I‚ with wings as swift As meditation or the thoughts of love‚ May sweep to my revenge’ “. Now‚ Spearesy stays true to the conventional
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Lab: Flame Test Purpose: to determine the ID of 2 unknown substances Background Information: Every atom consists of a nucleus with tiny electrons whizzing around it. The further away from the nucleus they are‚ the more energy the electrons have. If a metal atom is heated‚ the electrons get enough energy to jump higher away from the nucleus‚ they become “excited”. When they fall back closer to the nucleus (back to their ground state)‚ they give off this extra energy as light. Why is the
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disposal information. Procedure: 1. Place the two halves of a Petri dish on the projection stage of an overhead projector. Pour enough sodium sulfate solution into each half of the Petri dish to just cover the bottom of each half dish. 2. Add 2–3 mL of universal indicator to each solution to give each a rich‚ transparent green color. 3. Break a pencil lead in half. Attach the leads to opposite sides of the Petri dish bottom with the alligator clips. Make sure the tip of each lead
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Microbiology Sec 147848 November 18‚ 2013 Title of the Experiment: Enterobacteriaceae Identification: The Enterotube II System Learning Objectives: After completing this exercise we were able to inoculate an unknown bacterium that belongs to the Enterobacteriaceae by using technology effectively with a Enterotube II. An Enterotube II is a miniaturized multi-test system for rapid identification of enterbacteriaceae. We then evaluated the test results and generated a five-digit code for the unknown
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Everything you need to know about hydrocarbons INTRODUCTION: organic chemistry Organic chemistry is the chemistry of compounds that contain carbon and hydrogen. The element carbon has a special role in chemistry because it bonds with other carbon atoms to give a vast array of molecules. The varity of molecules is so great that we find organic compounds in many common products we use‚ such as gasoline‚ medicines‚ shampoos‚ plastic bottles‚ and perfumes. The food we eat is composed of different
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Name: _____________________________ Submit Worksheets for Credit Stereochemistry Workshop 1. Assign the marked asymmetric centers with R or S designations. 2. Rank each of the following sets of substituents (highest priority substituent = 1; lowest priority substituent = 4). Place the number in the blank below the substituent. (a) (b) 3. Determine the relationship between each of the following pairs of structures (enantiomers‚ diastereomers‚ constitutional isomers
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dissolved form of the substance and if the light flashed on‚ then the substance conducted electricity when dissolved. I think substance 1 is a covalent compound. This is because it had a low melting point during the melting point test. Substance 2 might be a metallic compound because it had a high melting point but also low solubility in water. I think substance 3 is an ionic compound because it had a high melting point and solubility in water. Substance 4 may be a metallic compound because it
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547 (3 sig. figs.) 2. Zeros in a number between non-zero digits are always significant. Example: 4308 (4 sig. figs.) 3. Trailing zeros to the right of a decimal point are significant. Example: 4.00 (3 sig. figs.) 4. Leading zeros are not significant. Example: 0.000045 (2 sig. figs.) 5. Measured values that have trailing zeros only to the left of the decimal point are ambiguous and should be expressed in scientific notation. We must take note that the chemistry textbook (Silberberg
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