http://galileoweb.org/debellas Just another Galileo Web weblog Wed, 19 Nov 2008 03:24:40 +0000 http://backend.userland.com/rss092 en Endothermic and Exothermic Reactions Questions:                 1) What is an exothermic reaction?                 2)  What is an endothermic reaction?                 3) Define the term calorie. Procedures: 1)      Get  two Styrofoam cups for a calorimeter. Place them inside of one another to double their insulating properties. 2)      Using the graduated cylinder, measure out 50 ml of tap water ... http://galileoweb.org/debellas/2008/11/19/endothermic-vs-exothermic-reactions/ Models of Molecular Compounds   Pre-lab Questions: 1)      What is a covalent Bond? 2)      What is a dipole? 3)      What two factors determine whether a molecule is polar or not?   Procedures: 1) Using the gummy candy and toothpicks construct ball and stick models of the following compounds.   Data Table Formula Electron dot Diagram Structural formula Shape of Molecule Molecular polarity H2 H : ... http://galileoweb.org/debellas/2008/11/05/models-of-molecular-compounds/ Families of Elements Laboratory             Elements in the same family will combine in the same ratio with ions of the same charge. They will also exhibit similar properties such as color, solubility etc. In this lab we will combine several compounds that have negative ions in the same family and one ... http://galileoweb.org/debellas/2008/10/21/families-of-elements/ Families of Elements Laboratory             Elements in the same family will combine in the same ratio with ions of the same charge. They will also exhibit similar properties such as color, solubility etc. In this lab we will combine several compounds that have negative ions in the same family and one ... http://galileoweb.org/debellas/2008/10/21/families-of-elements-laboratory/ Isotopes of “Pennium” Pre-lab Questions: (leave room for answers)1)   What do the pennies represent in this investigation?2)   What do the different masses of the pennies represent?3)   What information do you need to calculate the average atomic mass for an element? Procedures:1)   Remove pennies from the baggie and make sure that you have ... http://galileoweb.org/debellas/2008/10/07/isotopes-of-pennium/ Electron Distribution using A Pencil Prelab Questions:1)   Why isn’t it possible to determine the exact path of an electron in an atom? (leave space for answer)2)   What does quantum theory of the atom tell you about the location of the electron in an atom?3)   What do the pencil marks represent in ... http://galileoweb.org/debellas/2008/09/23/electron-distribution-using-a-pencil/ The Cheese Lab Materials: 1 ½ liters of whole milk (optional) 100ml of Cultured Buttermilk Rennet Calcium Chloride Salt White Vinegar Pot/Pan: Stainless Steel, glass ceramic Colander Knife Big Spoon Wood Spatula (may be a wooden spoon) Thermometer Glass containers Balance 10ml pipette Gauze Procedures: (Decide at which step you should add your special ingredient) Part A: Curd 1) Wash your hands and put on gloves. Make ... http://galileoweb.org/debellas/2008/09/16/the-cheese-lab/ finding-the-density-of-solids.doc             Finding the Density of Solids  Hypothesis: All solids have the same density. (yes or no)   Procedures:1)   Today we will measure the density of eight different solid blocks and one unknown irregular object. Obtain one of the blocks and measure its mass on the balance to the nearest 0.01 g. Record in ... http://galileoweb.org/debellas/2008/09/16/finding-the-density-of-solids/ Graduated Cylinder Lab http://galileoweb.org/debellas/2008/09/03/63/ Chemistry Syllabus Chemistry I and II Course Purpose: Chemistry is meant to give you the student a firm grounding in the interaction of matter around them. They will be able to use this knowledge to become better consumers, more informed voters and have the ability to advance themselves in the sciences in ... http://galileoweb.org/debellas/2008/08/22/chemistry-sylabus/