Sister 1

Satisfactory Essays
Laboratory Report Sheet
Experiment # ___
Analysis of Milk

Nova Isablel Agan March 8, 2013
Alethea Dapac Score:

Objective:

Apparatus: beaker, stirring rod, graduated cylinder, test tube, water bath, test tube holder, evaporating dish, dropper, filter paper, pH paper, tripod, funnel, Erlenmeyer flask,

Chemical symbol:

Procedure: [Preparation of 100 ml whole milk] * 50 ml of milk was placed in a beaker and was diluted with 50 ml tap water.

I. Physical properties of milk * The color was noted. Specific Gravity (denser or less dense than water and pH.

II. Chemical properties of milk 1.) Action of hot alkali
1 ml of milk was placed in a test tube. NaOH was added drop by drop until yellow color develops that gradually deepens into a brown color.

2.) Saturation with MgSO4
1 ml of milk was placed in a test tube. Solid MgSO4 was added until precipitate formed.

3.) Test for formaldehyde preservative in milk
1 ml of milk was placed in a test tube. 1 ml of the solution containing FeCl3 in HCl was added. it was heated in low flame for 5 ml.

[note: the remaining milk in the beaker was added with 5 ml dilute HAc and was heated to boiling until precipitate was formed. It was cooled and filtered.

III. Chemical test for the different components of milk A. The filtrate from the previous procedure was boiled until it coagulates. It was filtered and reserved for part B. The coagulum was divided into two portions and the Biuret test and heating was performed.

B. The filtrate from III.A was used for the other tests. a.> Test for lactose.
5 drops of the filtrate was added with 3 ml Benedicts’ reagent. It was heated in a water bath. The results were noted. b.> Test for calcium ions.
1ml of the filtrate was added with 1 ml of (NH4)2C2O4 solution.

c.> Test for phosphate.
3 ml of the filtrate was added with a few drops of 6M HNO3

You May Also Find These Documents Helpful

  • Satisfactory Essays

    sister poem 1

    • 81 Words
    • 1 Page

    Coffee and Crème A special sister and best friend, Time with you, I love to spend. Always been there, through thick and thin, I know your thoughts, through your grin. A special sister and best friend, My gratitude, I wish to send, Your kindness keeps me very warm, Great conversations are the norm. A special sister and best friend, Your dreams and thoughts, I shall defend. We are more than just a team, I'm your coffee, you're my crème.…

    • 81 Words
    • 1 Page
    Satisfactory Essays
  • Satisfactory Essays

    sister maude

    • 2975 Words
    • 12 Pages

    ‘Sister Maude’ by Christina Rossetti Learning objectives: AO1: respond to texts critically and imaginatively, select and evaluate textual detail to illustrate and support interpretations. AO2: explain how language, structure and form contribute to writers’ presentation of ideas, themes and settings. Pre-reading Activity  P A I R  Let’s focus on the word ‘sister’. Think of any fairy tales, films, books, celebrities, sports women, pop groups, songs or television programmes where there…

    • 2975 Words
    • 12 Pages
    Satisfactory Essays
  • Satisfactory Essays

    author is showing the readers that sister Cora does not particularly like Avla Jane’s mother. In my book the husbands of the community are supposed to take on multiple wives to have many children. Sister Cora is the first wife and Alva Jane’s mother is the fourth wife. MAny times throughout the story the author has shown the jealousy that takes place in the house between sister Cora and sister Sherrie. I also believe the author has used that quote to show that sister Cora doesn't like Alva Jane either…

    • 260 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Grimke Sisters

    • 1023 Words
    • 5 Pages

    Kathryn Kisk Sklar’s Women’s Rights Emerges within the Antislavery Movement 1830- 1870, the Grimke sisters argued for the natural rights of women and slaves. They believed that all humans are moral beings, and are entitled to moral nature and rights. Throughout the documents Sarah and Angelina Grimke were not radical, but looked to better humanity in America. Their humanistic values urged the sisters to challenge the domestic roles and values that women in the 1800’s were faced with in their homes…

    • 1023 Words
    • 5 Pages
    Good Essays
  • Satisfactory Essays

    Morality and Sister

    • 305 Words
    • 2 Pages

    If you have not yet read the book, do yourself a favor and do so. Some issues I ... What is the major bioethical issue in my sisters keeper ... 4 answers 19 Apr 2012 Parents: Who else has seen the movie "my sisters keeper ... 3 answers 19 Sep 2011 My Sister's Keeper! Moral Issues? - Yahoo Answers 3 answers 17 Aug 2011 What was a social issue , in the movie "My Sister ... 2 answers 29 Mar 2011 More results from answers.yahoo.com CNS Movie Review: My Sister's Keeper www.catholicnews.com/data/movies/09mv069…

    • 305 Words
    • 2 Pages
    Satisfactory Essays
  • Better Essays

    Lost Sisters

    • 1031 Words
    • 5 Pages

    Stacy Frakes ENGL1213 23 October 2010 Who Am I Suppose to Be When I first read the poem “Lost Sisters,” by Cathy Song, I was under the impression it was about a Chinese women who held great pride for her Chinese culture and who was frowning on the choice of her sister, who made the decision to move to America from China. After further investigation, I discovered that Song’s poem “Lost Sisters,” explains the story of a woman who is facing the difficult realities of being a Chinese immigrant.…

    • 1031 Words
    • 5 Pages
    Better Essays
  • Good Essays

    My Sister

    • 552 Words
    • 2 Pages

    MY SISTER Elder brothers or sisters are a great inspiration to their younger brothers and sisters, and that is what my elder sister Mona is to me. I have one younger brother Shekhar, and one elder sister Mona. We all live together with my parents and grandma. Both of my parents work all week, so my elder sister takes care of us. I always look up to her as an ideal, and I know whenever I will need her she will be there for me. She is my inspiration, my sister, and my best friend. I love her and admire…

    • 552 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Sister Maude

    • 673 Words
    • 3 Pages

    Sister Maude Christina Rossetti begins her poem “Sister Maude” with two similar questions, asking who told her parents about her 'shame'. We do not know at this point what the narrator's shame is, but it gradually becomes clear that she was having an affair with a handsome man. In Victorian times when Rossetti was writing, this would certainly have been considered shameful. The narrator answers the questions in the first quatrain, naming her sister Maude as the person who told her parents what was…

    • 673 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    Sister Flower

    • 637 Words
    • 2 Pages

    Sister Flower played a significant role in the narrators life. Sister Flower is described as a being an aristocrat and being a strong lady of her time. She is well-dressed and a better educated women in her community despite the fact that she is black. When the narrator refers to her as "the richest white women in town" you can tell that the author is at awe with Sister Flower. In the essay, Sister Flowers presence in the narrators life eases her pain and encourages her to be strong.rarely mention…

    • 637 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Sister Flowers

    • 284 Words
    • 2 Pages

    separate what makes Sister Flowers so different and special compared to herself and her own life. Marguerite has respect for Sister Flowers for a number of reasons: the way Sister Flowers speaks and uses her grammar, the way she dresses, the way she carries herself, her body shape and even the richness of her skin. Marguerite is pretty embarrassed for her and her grandmother's sake and in my opinion it shows how much Marguerite would like her grandmother to be more like Sister Flowers. She even goes…

    • 284 Words
    • 2 Pages
    Satisfactory Essays