Describe radioactive isotopes as a source of energy. eg. 235U * Describe the build-up of electrons in `shells` and understand the significance of the noble gas electronic structures and of valency electrons. * Understand that formation of ions implies gain or loss of valence electrons. 2. The Periodic Table. * Describe the Periodic Table as a method of classifying elements in groups and periods and its use to predict properties of elements. * Recognize different blocks in
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textbooks and the LabPaq box or 5-6 thick textbooks. 2. Remove the plunger from the titrator and place it back in your LabPaq box. 3. Attach the stopcock to the tip of the titrator by placing the larger‚ clear‚ plastic end of the stopcock into the tip of the titrator and then twisting the stopcock into place. The stopcock should fit tightly into the titrator‚ so that the liquid will not leak. 4. Stack the textbooks on top of one another or stack two textbooks on top of the LabPaq box. 5. Clamp
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in Pipet 1 Thymol Blue Indicator‚ 0.04% - 0.5 mL in Pipet Experiment procedure: Part I: 1. Prepare an ice water bath by partially filling one of the 50-mL beakers from your LabPaq with tap water and crushed ice. Set aside. 2. Prepare a hot water bath by partially filling the second 50-mL beakers from your LabPaq with very hot tap water. Set aside. 3. Using a 24-well plate add 5 drops of 2.0 M MgCl2‚ magnesium chloride solution to wells C1 and C2. Add 10 drops to wells C3 and C4. 4. Add
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ColleGe Chemistry LabPaq / Published by: Hands-On Labs‚ Inc. sales@HOLscience.com / www.HOLscience.com / Toll Free 866.206.0773 a laboratory manual of small-scale experiments for the independent study of General College Chemistry 50-0125-CK-01 LabPaq® is a registered trademark of Hands-On Labs‚ Inc. (HOL). The LabPaq referenced in this manual is produced by Hands-On Labs‚ Inc. which holds and reserves all copyrights on experiences. The laboratory manual included with a LabPaq is intended for
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Flame Test Laboratory Report Introduction The purpose of this lab is to observe and identify metallic ions‚ using flame tests. The traditional flame test originated when Robert Bunsen invented the Bunsen burner to test two new alkali metals he and his partner had discovered. “A flame test is an analytic procedure used in chemistry to detect the presence of certain elements‚ primarily metal ions‚ based on each element’s characteristic emission spectrum” (Flame Test 1). Using this test‚ an element
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one period all have the SAME NUMBER OF ELECTRON SHELLS. *Going ACROSS a period each element has ONE MORE PORTON and ONE MORE ELECTRON than the previous element. *Going ACROSS a period‚ the chemical properties of elements becomes LESS METALLIC AND MORE NON-METALLIC. ***GROUPS These are VERTICAL COLUMNS OF ELEMENTS .These are EIGHT groups numbered I to VII with the final group 0. *Each element in a group has the SAME NUMBER OF ELECTRONS IN ITS OUTER SHELL- for elements in Groups I to VII‚
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smoking Give at least two examples of chemical changes you observed. Green changed from blue to application of HCL to Mg smoking and bubbling and CuCO3 Classify the following properties of sodium metal as physical or chemical: • Silver metallic color: Physical • Turns gray in air: Chemical • Melts at 98oC: Physical •
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that were produced by specific metallic ions that are shown in a flame. This happens when an electron gains energy; the electron moves from an energy level that’s farthest away and to an empty orbital close to the nucleus with higher levels‚ so one of the electrons gives off energy. A flame test is a visual test where the energy is in the form of a color change and the change can be seen based off it. Therefore‚ different metals emit different color. When a metallic ion is heated in a flame test the
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bonds formed and the importance of the electron in the formation of these new bonds. Materials Boileezers (boiling chips) Desiccant 0.17M acetic acid (acidified water) Solution of Sodium thiosulfate Granular zinc Iodine crystals Zinc ion and iodine-iodide-triiodide ion in water Solid zinc iodide Mineral oil Silver nitrate Magnesium turnings 3M Hydrochloric acid (HCl) solution 2 boiling tubes 1 large tube (we used a small) Pipet Beakers (to hold tubes) Bunsen burner PART 1 Procedure Get a boiling
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Physical and chemical ProPerties Physical and Chemical Properties Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor. Substance Name Mg Cu Zn
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