Physical and Chemical Changes Say you are presented with two beakers‚ beaker A and beaker B‚ each containing a white‚ powdery compound. * a. From your initial observations‚ you suspect that the two beakers contain the same compound. Describe‚ in general terms‚ some experiments in a laboratory that you could do to help prove or disprove that the beakers contain the same compound. You may try some of the followings: * Dissolving in water * Dissolving in different chemical solution
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Digestion Review Questions 1. Certain organisms are able to store energy from the Sun in energy-rich compounds. Which event best illustrates this activity? A) B) C) D) A fox captures and eats a young rabbit. A caterpillar is eaten by a blackbird. Lettuce produces organic substances. Bacteria change organic material into simple nutrients. 2. Which phrase is an example of autotrophic nutrition? A) B) C) D) a cow eating grass in a field a mushroom digesting a dead log an apple tree making its own
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Naphthalene Ball in Water Objective: In this experiment‚ we will determine if the naphthalene can be dissolve in water or not. And what will happen in the filter paper if we stick it in the funnel and let it absorbed the fumes in the boiling water with powdered naphthalene. Materials: Evaporating dish Spatula Watch Glass Filter paper Tripod Mortar and pestle Alcohol Lamp Funnel Beaker Data: Naphthalene 1. white crystalline compound 2. has a strong odor 3. round
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Challenge #1 — The Penny Problem: The first challenge to complete is the Penny Problem. The radio station is giving the winner of this challenge a prize pack that includes tickets to see his or her favorite band in concert. To start off the challenge‚ the radio station has placed pennies in a cylindrical glass jar. Each penny is 0.75 inches in diameter and 0.061 inches thick. If the cylindrical glass jar containing the pennies has a diameter of 6 inches and a height of 11.5 inches‚ how many pennies
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5 Solutions 44918 1/23/09 5:11 PM Page 320 © 2010 Pearson Education‚ Inc.‚ Upper Saddle River‚ NJ. All rights reserved. This material is protected under all copyright laws as they currently exist. No portion of this material may be reproduced‚ in any form or by any means‚ without permission in writing from the publisher. •5–1. Draw the free-body diagram of the 50-kg paper roll which has a center of mass at G and rests on the smooth blade of the paper hauler. Explain the significance
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build and nourish cells; and to provide energy. Food travels though the digestive tract by muscle contraction called peristalsis. This journey of digestion can take up to twenty four hours. Digestion begins in the mouth where the teeth break food down into smaller particles during mastication. Salivary glands secrete saliva which begins chemical digestion and keeps the food moist. Swallowed food is pushed into the pharynx by the contraction of multiple muscle of the face‚ neck and tongue. The soft
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lipid synthesis. B) intracellular digestion. C) cellular respiration. D) photosynthesis. Points Earned: 0.5/0.5 Correct Answer(s): D 3. The stroma is the A) thick fluid enclosed by the inner chloroplast membrane. B) space between the inner and outer membranes of a chloroplast.
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Introduction to sheet metal forming processes INTRODUCTION TO SHEET METAL FORMING PROCESSES The documents and related know-how herein provided by SIMTECH subject to contractual conditions are to remain confidential. This documentation and related know-how shall not be disclosed‚ copied or reproduced by any means‚ in whole or in part‚ without the prior written permission of SIMTECH. © 1999 SIMTECH. All rights reserved Product names are mentioned for identification only and may be registered
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Physical Training CHEAT SHEET Introduction: Good Morning‚ My name is _______________‚ and I will be your PT Instructor this morning. Risk Assessment is Low‚ Weather:_________. Environmental Considerations: Uneven Terrain‚ Watch your footing. Extended Rectangular Formation: Extend to the left‚ March..Arms downward‚ Move..Left‚ Face Extend to the left‚ March..Arms downward‚ Move..Right‚ Face From front to
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Department of Chemistry Physical and Chemical Properties Submitted by: Date Submitted: 2/2/2014 Date Performed: 1 Lab Section: Course Instructor: PURPOSE: To identify chemical and physical change in matter. PROCEDURE: Finding out the physical and chemical change in matter. There was seven different substances that were being tested; Mossy Zinc (Zn)‚ Magnesium (Mn)‚ Copper (Cu)‚ Magnesium Oxide (MgO)‚ Copper II Nitrate (Cu(NO3)2)‚ Copper II Carbonate (CuCO3) and Sodium Chloride
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