In this experiment‚ we used acquired observational data to develop an activity series describing the relative reactivity of the metals being tested. The elements within a periodic table often show different trends in physical and chemical properties depending on the period or group they are apart of. In a periodic table‚ elements are arranged by increasing atomic number in horizontal rows called periods. The atomic numbers represent the number of protons in each element. The periodic table is also
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Haitians Result to Eating Dirt The Haiti people live on a very small few populated island of 8‚288‚000 next to the Dominican Republic. Due to the result of the very poor economy and the oil prices raising this makes the food prices rise and make them unaffordable for the average people to buy. When you have no money to buy food‚ you have to fall back to making “dirt cookies” made from dried yellow dirt‚ salt‚ and vegetable shortening this has become a regular meal for the Haiti community. For
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intermediate copper compounds back into copper metal. By weighing the copper at the beginning and at the end of the experiment the percentage yield can be determined. Method: The experiment was carried out as outlined in the practical manual. Results: Table: showing masses: Mass copper wire 0.2510 Mass crucible 28.9257 Mass watch glass 19.6213 Mass watch glass + copper 19.7890 Mass copper product 0.1677 Calculations: Percentage yield: Discussion and conclusion:
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CHEMICAL KINETICS RESULTS AND DISCUSSION The balanced equation of the reaction between sodium thiosulfate and Hydrochloric acid is: S2O32- (aq) + 2 H+ (aq) SO2 (g) + S (s) +H2O (l) Using beakers with the same diameter was very important in conducting the experiment. If different sizes were used‚ the visibility of the “x” on the paper beneath the beaker could disappear from view too early or too late than the hypothetical time depending on the depth of the solution. It was also significant
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into primary structure‚ secondary structure‚ tertiary structure and quaternary structure. It is important for all living things in the world as they form enzymes‚ antibodies and hormones. Materials and Procedures: Results and Discussions: Test for Carbohydrates Result Starch suspension When the yellowish-brown iodine was added into the starch suspension‚ the starch suspension was changed into dark blue. Potato slide Discussion Starch suspension When the
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“Analyse the results of one Twentieth century treaty or peace settlement” The Locarno Treaties of 1925 could be seen as the formal turning point for the beginning of the Locarno honeymoon era. It came as a welcome solution to the German problem at a time where they were regaining strength as a powerful nation after accepting the Dawes Plan 1924‚ which gave them financial aid from the USA – worrying nations‚ particularly those sharing borders with Germany (France‚ Belgium‚ Poland‚ Czechoslovakia)
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Medicine Analysis – Synthesising Aspirin results After recrystallisation differences between the crude and purified aspirin were noted. The impure (crude) aspirin was powered and fluffy with small clumps and was slightly yellow in colour whereas the pure aspirin has a less fluffy crystalline powder and was whiter. This showed distinct differences in the two substances but similarities were also apparent showing aspirin‚ in some level‚ was created. Before recrystallisation the crude aspirin could
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Will no gum or having gum improve test scores? Data Analysis The question being answered in this experiment is‚ “Which gum will improve memorization the best?” The hypothesis for this experiment is‚ “If the gum flavor is altered‚ then one flavor will improve memorization more than another flavor.” The independent variable is the flavor of the gum. The dependent variable is the scores after taking the test with the different flavors. The control group was the test scores without any gum.Experimental
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My lab results were similar to my hypothesis. My hypothesis was that the densest object would be the rubber stopper. In the lab results the densest object was the penny and the rubber stopper was second. My hypothesis was switched. My hypothesis was correct when I stated that the macaroni was the third densest object. My hypothesis was also correct for the dice‚ but the bead and the dice share the same density. So they are both the fourth densest item. I was wrong with my hypothesis when I placed
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Assessment Results The use of tests can provide valuable information to be used in developing a successful educational plan‚ but testing results alone cannot fully determine a student’s needs. A licensed staff will always be responsible for interpretation of test results‚ but the paraprofessional may help with scoring‚ proctoring‚ or recording during the testing. In addition‚ the paraprofessional may have insight into the student’s stress level during the test or other factors that may affect results in
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