Preview

Comparative Study of the Concentration Dependence of Different Softdrinks Using Refractive Index

Powerful Essays
Open Document
Open Document
5362 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Comparative Study of the Concentration Dependence of Different Softdrinks Using Refractive Index
Comparative Study of the Concentration Dependence of
Different Softdrinks Using Refractive Index
____________________________

A Research Presented to the Faculty of
Holy Trinity College, Puerto Princesa City
______________________________

In Partial Fulfillment of the Requirements For the Subject Physics I
______________________________

By:

Abadilla, Abraham F.
Canon, Gaea A.
Cuadra, Cristy Marie O.
Faigao, Anna Margarita O.
Magay, Mary Stephanie T.
Mestidio, Teresa P.
Omiple, Kathlyn Rose R.
Pacanza, Andrea E.

Holy Trinity College
January 2010

Approval Sheet

The research study entitled “Comparative Study of the Concentration Dependence of Different Softdrinks Using Refractive Index”, prepared and submitted by Cristy Marie Cuadra, et al., in partial fulfillment for the requirements for the subject Research I has been examined for oral examination.

__________________ Mrs. Geraldine Failon Adviser

Panel of Examiners

Approved by the Committee on Pre-oral Examination with the grade of _____%.

__________________
Chairman

_____________ ____________ Member Member

Accepted and approved in partial fulfillment of the requirements for the subject Physics I. ____________________ Sr. Pinlyn Dahili, O.P. Principal Date: __________________

ii
Acknowledgement

The researchers would like to express their sincere appreciation and deep gratitude to the following that have been of great help for the completion of this investigatory project:

Mrs. Geraldine Failon, our Physics teacher, for her patience and unending words of support that encouraged the researchers to pursue the studies:

To their beloved principal, Sr. Pinlyn Dahili, O.P., for giving the researchers a chance to conduct this research study;

To Ms. Lany Omilda, Basic Education Department Laboratory-in-Charge,



References: "Table of Refraction." Microsoft® Encarta® 2009 [DVD]. Redmond, WA: Microsoft Corporation, 2009 "Refraction." Microsoft® Encarta® 2009 [DVD] "Snell’s Law." Microsoft® Encarta® 2009 [DVD]. Redmond, WA: Microsoft Corporation, 2009 Journals Cuadra, Cristy Marie O., et al. “Phytochemical Testing of Barbados Cherry (Malphigia punicifolia L.)” Holy Trinity College. Puerto Princesa City. 2008. Canon, Gaea A. et al. “Phytochemical Study of Granadilla (Passiflora quadrangularis)” Holy Trinity College. Puerto Princesa City. 2008.

You May Also Find These Documents Helpful

  • Good Essays

    The purpose of the experiment is to determine the effect of cross-linking has on the viscosity of the polymer solution. In the experiment, a hotplate was used to heat 50 mL of tap water in a 200 mL beaker to boiling. It took nearly two hours to fully dissolve 2 grams of PVA [poly(vinyl alcohol)] in the water by sprinkling minor amounts bit by bit. 10 drops of 0.1% methyl red indicator was added to PVA solution for the cross-linking part. 0.4 grams of borax was dissolved into 10 mL of hot water. 3.0 mL of the dissolved borax was added to the cooled PVA solution in 1.0 mL aliquots. The cross-linking consisted of the addition of sulfuric acid and sodium hydroxide. 3.0 M H2SO4 was added to the mixture until it became faint red. 2.0 mL of 1.0 M NaOH was added to the mixture to neutralize the H2SO4. Originally, it was planned to measure viscosity quantitatively with a start and end position of the mixture. It was planned to time how long it takes for the ball bearing to move through the start and finish markers on the beaker. However, as the experiment carried on, it was visible from the difference in composition of the mixture that viscosity had increased and a qualitative measurement of viscosity was best. The ball bearing was only able to pass through the least viscous times of the mixture: after the total addition of PVA and after the addition of H2SO4. The viscosity of the mixture increased after every addition of Borax and at the addition of NaOH. The addition of the acid resulted in the lowering of viscosity whereas the addition of base returned the solution back to its higher viscosity. Possible errors in experiment could arise from measuring the wrong amounts of the solution or even overheating the PVA when dissolving. Another error is not allowing the PVA to dissolve at minor amounts.…

    • 1111 Words
    • 5 Pages
    Good Essays
  • Good Essays

    A straight stick appears bent when partially immersed in water; the sun appears oval rather than round when it is about to set; a stream may appear to be much shallower than you know it to be. These are some of the effects caused by the refraction of light as it passes at an angle from one medium to another. Light refraction happens every day in almost every little thing, it is an optical illusion. For our science fair project my partners are measuring the refraction of a laser light through different media. While researching this topic we came up with the studies done on this topic, what refraction is, the formulas used to calculate the refraction measurement, etc……

    • 619 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Refractive Index: Refractive Index formula is use to find the change of speed of light as it travels from air into glass. It measure how much light slows down when it enters denser medium such as glass. The formulae is written as: To find out the refractive index, substitute these into the equation; The speed of light travels in air is 3 x 10^8-1 The speed of light travels in glass is 2 x 10^8 ms^-1 Refractive Index…

    • 435 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Light reacts to different density in different ways. An example when it goes through a low density medium to a high density medium the angle of refraction decreases. With all the test done the angles of incident and reflection stayed the same. This is because with light what angle it approaches at is the angle the light will reflect back at. Also the angle of refraction depended on what the angle of incident and refraction were,refraction is a dependent variable being the reason why the other angles matter. The first test was how light moves through air to water. The angle of incident was always 30 to make it a fair trial. As the light hit the water the angle of refraction was 22 degrees give or take. The angle had decreased because of the high density of the water. The angle of incident and reflection had stayed the same as expected. The second test was how light reacts while going from water (a high density medium) to air (a low density medium). The light hit the air from the water at a 30 degree angle. The result for the angle of refraction was 42 degrees because when light travels through a dense medium (water) it slows down and when it goes through a less dense medium(air) it bends away from the normal. As always the angle of reflection and incident stay the same. Air to glass was the third test. It was found that the angle of refraction had decreased…

    • 591 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    BA HW4 Appendix

    • 780 Words
    • 3 Pages

    According to the question, “Assume that all items other than vegetables have a low margin of 1% while vegetables have a larger margin of 3%. ”…

    • 780 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    Viscosities of Liquids

    • 1259 Words
    • 6 Pages

    This experiment focuses on measurements of different trials of various concentrations. The collected data is used to compare and contrast to the ideal binary solutions and their components. The Ostwald viscometer is a useful laboratory equipment to measure the viscosities of many binary solutions.…

    • 1259 Words
    • 6 Pages
    Good Essays
  • Powerful Essays

    Why do object when placed in a bucket of water bend? This is not magic but it is a property of light known as refraction. The bending of light when it travels from one medium to another is known as refraction.…

    • 1741 Words
    • 7 Pages
    Powerful Essays
  • Better Essays

    The state became the encourager of savings and also an important investor and the owner of capital. Since the state was to be the primary agent of economic change, it followed that private sector activities had to be strictly regulated and controlled to conform to the objectives of state policy.…

    • 2877 Words
    • 12 Pages
    Better Essays
  • Powerful Essays

    Smooth Otter Report

    • 3418 Words
    • 14 Pages

    Otters belonging to the order Carnivora of class Mammalia, are semi-aquatic members of the family Mustelidae which also includes weasels, martens, polecats, badgers, skunks, grisons and minks. Otters are placed in the sub-family Lutrinae (Khan W. A. et al.,2010). Genus Lutrogale ;Smooth-coated otter (Lutrogale perspicillata) (Ogamba E.N. & Abowei J.F.N.,2012) ( Figure 1) .The smooth otter is the largest otter in Southeast Asia that comment otter. It was named for its shorter, smoother coat than that of other otters with appears velvety and shiny. This otter is monogamous and usually seen – round in small family groups of 4-6 members comprising a pair and their offspring from breeding seasons. It has a more rounded heads and a hairless nose compared to other otters. It also has a tail that is more flattened, in contrast to the more rounded tails of other species and measures 60% of its body length.…

    • 3418 Words
    • 14 Pages
    Powerful Essays
  • Good Essays

    To find Refractive Indices of Water And Turpentine Oil using a plane mirror, a equiconvex lens (made from a glass of known refractive index) and an adjustable object needle…

    • 1354 Words
    • 5 Pages
    Good Essays
  • Powerful Essays

    In scientific experiments, correct measurements are required to achieve precise and accurate data. Precision is the degree to which several measurements provide answers very close to each other. Accuracy describes the nearness of a measurement to the standard or true value. Certain measuring devices are used to attain precision and accuracy.…

    • 858 Words
    • 4 Pages
    Powerful Essays
  • Powerful Essays

    Medicinal plants are potential sources of new drugs to improve the treatment of diseases whose treatment is associated to anti-oxidative agents. In the current study, we carried out a comparative analysis of the antioxidant activities of extracts of the selected leaves of 6 common medicinal plants. Total Ascorbic Acid Content, Total Carotenoid Content, Antioxidant potential using FRAP assay and Total Phenol Content was quantitatively estimated from leaves of Rauvolfia serpentina, Cymbopogon citrates, Hibiscus rosa sinensis, Zingiber officinale, Calotropis procera and Spinacia oleracea. It was found in this study that the highest total ascorbic acid content was present in Cymbopogon citratus whereas Calotropis procera showed the least content of total ascorbic acid present. On the other hand total carotenoid content of Cymbopogon citratus was the highest and that of Hibiscus rosa sinensis was the lowest. Hibiscus rosa sinensis exhibited highest FRAP value, which was subsequently found to be least in Cymbopogon citrates. Spinacia oleracea was found to have highest total phenol content and the least was present in Hibiscus rosa sinensis.…

    • 1315 Words
    • 6 Pages
    Powerful Essays
  • Better Essays

    It was done to conduct a phytochemical screening of a particular plant and the identification of plant constituent present in its extract.…

    • 2006 Words
    • 9 Pages
    Better Essays
  • Good Essays

    HPTLC finger printing of M. concanensis was done by using selected solvent system Chloroform: Ethyl acetate: Formic acid (50%:40%:10%v/v) for leaf, flower and seed extracts, visualized under UV 254 and 366 nm showed more components. The Rf values and chromatogram in the methanol extract of leaf, flower and the seed was presented in the Table-8. In general, more degree of phyto compounds diversity has been observed in vegetative part when compared with the vegetative parts. The methanol extract of leaves, flowers and seeds of M. concanensis showed the presence of 33 peaks with different types of Rf values with range from 0.01 to 1.04. A total number of 6 peaks with Rf values 0.01, 0.41, 0.47, 0.73, 0.84 and 1.04 for leaves, 13 peaks with Rf values 0.11, 0.26, 0.40, 0.49, 0.54, 0.69, 0.71, 0.78, 0.84, 0.92, 0.96, 0.98 and 1.02 for flower and 14 peaks with Rf value 0.03, 0.26, 0.35, 0.40, 0.53, 0.55, 0.62, 0.71, 0.77, 0.85, 0.93, 0.95, 1.00 and 1.03 were observed in seeds. The maximum phenol content of M. concanensis was observed in leaves followed by flowers and seeds. This is in harmony with phenols standard of Gallic acid, the Rf value being 0.85 present in the seed extract showed in the plate-19.…

    • 878 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    DE PADUA, L.S. and J.V. PANCHO.(1989). Handbook on Philippine Medicinal Plants. Vol. 4. University of the Philippines, Los Banos College, Laguna.…

    • 5291 Words
    • 22 Pages
    Powerful Essays