Chemistry 11 Final Examination Review - Answers Part A - True or False. Indicate whether each of the following statements is true or false. Correct the false statements. F 1. The mass of an electron is equal to the mass of a proton. The mass of an electron is less than the mass of a proton. T 2. The mass of a proton is approximately equal to the mass of a neutron. T 3. The atomic number represents the number of protons in a nucleus. T 4. The proton has a mass of approximately
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Conclusion The purpose of this experiment was to discover the chemical properties that copper has when reacting with other chemicals and how it changes physically during these processes. (Department of Chemistry‚ 2013) This was achieved through many types of reactions‚ such as a redox reaction‚ double displacement‚ decomposition reaction and single displacement depending on the chemical properties in relation to copper of the other substances when it was added with copper. Copper was either in an
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Since the Grignard reagent can easily react with water‚ all glassware including the 25 ml round bottom flask‚ magnetic stir bar‚ 3 and 5 ml conical vial‚ 50 mL Erlenmeyer flask‚ claisen adapter‚ drying tube and 5 glass pasteur pipets were first added to a 250mL beaker and placed in the oven for 30 minutes. After the completion of the thirty minutes‚ 0.150 g of shiny magnesium turnings and a stir bar was first added to the round bottom flask and the claisen adapter along with the drying tube packed
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Table 1: Data Collection Table – Contains all of the primary data directly obtained from the lab. Indicator | Initial volume of NaOH in burette (ml) ±0.05 | Final Volume of NaOH in burette (ml) ±0.05 | Final – initial Burette Reading (Volume of NaOH used) (ml) ±0.1 | Qualitative Observations | Phenolphthalein | 0.00 | 0.90 | 0.9 | At first when the base was being dropped into the vinegar there wasn’t a color change‚ however when the solutions came close to full titration‚ the solution
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GS104 Lab Report Experiment # 1 Measurement‚ Length‚ Mass‚ Volume‚ Density & Time David Case: January 17‚ 2015 Experiment #1 Measurement‚ Length‚ Mass‚ Volume‚ Density‚ & Time Objectives: To make basic distance‚ mass‚ density‚ and time measurements. To make calculations of volume and density‚ using proper units‚ and to practice using graphing software while graphing the relationship between the circumference of a circle and its diameter. Materials:
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D(g/cm3) T#1 98.80 99.45 0.99g/cm3 17.66 8 2.2g/cm3 35.45 13 2.72g/cm3 53.95 11 4.9g/cm3 T#2 98.79 99.45 0.99g/cm3 17.64 8 2.2g/cm3 35.46 13 2.72g/cm3 53.94 11 4.9g/cm3 T#3 98.79 99.45 0.99g/cm3 17.66 8 2.2g/cm3 35.46 13 2.72g/cm3 53.95 11 4.9g/cm3 Avrg. 98.79 99.45 0.99g/cm3 17.65 8 2.2g/cm3 35.46 13 2.72g/cm3 53.95 11 4.9g/cm3 During the lab‚ the whole purpose of the lab was to determine density of both regular and irregular shaped objects. Throughout the lab I found out that
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Being able to extract a compound or substance from a product or object will encourage us in being able to do the same in a similar manner with a tea solution. Extracting compounds is an important step in any kind of organic chemistry lab and will help us be better at accomplishing the experiment in a much faster and accurate rate than from before. Experimental To begin the experiment‚ a tea solution must be made by incorporating a tea bag into a beaker filled with almost boiling water and the
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Maggie Mitchell IB Chemistry Prd. 5 THE HALOGENS LAB Date: 9/11/13 Purpose: The purpose of this experiment was to observe and record the halogens’ (NaF‚ NaCl‚ NaBr‚ and KI) reactions with the chemicals Ca(NO3)2‚ AgNO3‚ and NH4OH and use these observations to identify an unknown halogen. Data: (see next page) TABLE 1: REACTIONS OF HALOGENS WITH CA(NO3)2‚ AGNO3‚ AND NH4OH REACTION NAF NACL NABR KI REACTION W/ CA(NO3)2 solution turns cloudy and precipitate forms clear precipitate
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Acetic acid MSDS. 2012. “Material Safety Data Sheet Acetic acid MSDS.” Accessed September 3‚ http://www.sciencelab.com/msds.php?msdsId=9922769 Chemlab. 1997-2000. “Chemlab-glassware-burets.” Darmouth College. Sienko‚ Michell and Robert Plane. 1957. Chemistry. McGraw-Hill Book Company‚ Inc.
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PHYSICAL PROPERTIES: DENSITY Introduction According to the definition Density is the physical property that allows us to compare the mass of substances for a specific volume. In this Lab activity that took place in Deree College‚ Agia Paraskevi Campus we deal with the density of solids and density of liquids. The main purpose of this experiment is to understand what in reality density means‚ how we can measure it‚ how useful it is‚ what is the difference between density of solids and liquids
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