Objectives: (1 of 20 points) The objectives of this experiment are: 1. Chemical Change and Observation Lab - 1586 Words | Bartleby Teaching notes and expected observations. Photosynthesis is one of the most important anabolic chemical reactions that allows life to exist on Earth. In this lab, copper (II) chloride, CuCl 2 HCI and BIT (Brotherly blue) c. ) NH (ammonia, a base) and 1 drop of BIT d. ) HCI and blue dye e. ) Blue Dye and NAACP (sodium hypochlorite). Chemical and Physical Changes Lab Report - PHDessay.com VIII. 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. Exercise 1. 3. Identify the following as examples as either Physical or Chemical changes . Data Table 1: Chemical Change Observations I believe that this is the result of a chemical change. Burning of paper and log of wood. Place the thermometer and the capillary melting point tubes in the Mel-temp apparatus chamber. Read through the experiment for directions to complete this lab. Another example is methyl orange, which is red in acids and yellow in alkali solutions., When sufficient NaOH has been added to react with all of the acid, the titration is complete -- the equivalence point has been reached. Observations of Chemical Change Scribd. CHEM 181 DL1 Observations of Chemical Changes. Labpaq Physical And . With water, light energy from the sun, and carbon dioxide from the air, photosynthetic organisms are able to build simple sugars. The following notes explain the expected observations for each step/reaction: A dense white precipitate of barium sulfate forms. Please be specific and detailed. The starch has not been removed completely, but is in a lesser quantity than the others. A chemical change is when bonds are broken and new ones are forced to form. Lab Report: Physical and Chemical Changes. The third explanation resulted in oxygen inside the flask becoming carbon dioxide which then dissolves in water causing the air pressure to decrease under the glass and the higher pressure outside the flask pushed the water up the flask. Chemical Reactions Hands-On Labs, Inc. To associate chemical properties with household products Background Information: (2 of 20 points) Chemical changes are often accompanied by physical changes. Heat slowly to acquire the most accurate results. . Place the thermometer and the capillary melting point tubes in the Mel-temp apparatus chamber. Chemical change. Please see the HOL Lab Kit link in the Blackboard course or the course syllabus for information on . Try this microscale practical to explore the chemical changes in displacement, redox and precipitation reactions. Submit your completed report on Blackboard. Matter is capable of undergoing changes, which are classified as either physical or chemical. PDF CP Chemistry - Sample Lab Report I. Experiment #3: Observing a Chemical

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