Presentation on theme: "PH scale-Cabbage Juice pH1-23-45-67-89-1011-1213-14 ColorPinkDark RedVioletBlueBlue- Green Greenish- Yellow Bright Yellow Acid/BaseAcid NeutralBase."— Presentation transcript:
pH scale-Cabbage Juice pH1-23-45-67-89-1011-1213-14 ColorPinkDark RedVioletBlueBlue- Green Greenish- Yellow Bright Yellow Acid/BaseAcid NeutralBase
Goodmorning!! 1.Please make sure your name is on your HW wkst. Rip off first page and pass to front. Also signed stuff. 2.Take out a blank sheet of paper. Header is always: name, date, period 3.Title: Safety Quiz. 4.Number paper from 1-35. 5.Please tuck everything else tightly away. 6.Tell your neighbor how you’re doing.
P.R. Work (8/29/11) 1.A strip of magnesium metal is dropped into an aqueous solution of copper(II) chloride.
AP Exam/Class Survey 1. Keeping in mind that a 67% is a 5, 50% is a 4 and a 33% is a 3, what do you predict will be your AP Exam score? 2. Were there any topics on the exam for which you felt unprepared? 3. Which part of the review that we did in class was most helpful for you? 4. How would you have changed our class review time? 5. How would you have changed your personal review time? 6. What changes would you like to see in the way AP Chemistry is taught? 7. Overall, do you think this course has been useful for you? Why or why not? (Please elaborate)
(a) Excess potassium hydroxide solution is added to a solution of aluminum nitrate. (b) A solution of sodium bromide is added to an acidified solution of potassium bromate. (c) Sulfur dioxide gas is bubbled into distilled water. (d) Phosphine (phosphorus trihydride) gas is bubbled into liquid boron trichloride. (e) Hydrogen gas is passed over hot iron(II) oxide powder. (f) Solid potassium amide is added to distilled H 2 O. (g) A strip of magnesium metal is heated strongly in pure nitrogen gas. (h) A solution of nickel chloride is added to a solution of sodium sulfide.
Components for EACH LAB Title Example: Heat of Combustion of Wax Purpose-Write one or two sentences that describe the reasons or objectives for completing the lab. Example: To determine the amount of heat produced when a specific amount of wax is burned and use this to determine the enthalpy of combustion for the wax. List of Materials-Everything used in the lab Procedure-In your own words, write the directions for the experiment in a numbered step-by-step list.
Data Table-Record the information from the experiment in the table while conducting the lab. Include units for all measurements. Observations-Create a blank table to record observations collected during the experiment (completed for prelab assignment). Include anything you do, see, smell, hear, etc.
Calculations/Results: Include all pertinent calculations. For all calculations, the equation must be expressed in words first before numbers are used in the equation. Show work for calculations, express all answers to the correct number of significant digits and include units. Percent error should be calculated in this section. Conclusion: A one to two sentence summary of what happened in the lab including deviations from expected results and possible explanations for error.