Alli's practical science
Alli's practical science
  • Видео 45
  • Просмотров 93 348
Independent t test equal variance
How to conduct an independent t-test in excel (assuming equal variance)
Просмотров: 19

Видео

paired t test
Просмотров 16Месяц назад
How to conduct a paired t-test on excel
One Way ANOVA
Просмотров 17Месяц назад
How to calculate one way ANOVA in excel
Descriptive statistics Mean Mode Std Dev
Просмотров 11Месяц назад
How to calculate descriptive statistics in Excel
Faecal egg extraction method
Просмотров 1142 года назад
Farm animals can contain parasites in their guts. Some parasite eggs are passed out with the animal's poo. This video shows you how to extract the parasite eggs to conduct faecal egg counts to decide on if treatment with an anti-parasite drug is needed
Identifying unknown organic solutions
Просмотров 1874 года назад
Use organic reactions to identify amines, carboxylic acids, primary alcohols, aldehydes and ketones. Refresh your memory on organic tests by watching ruclips.net/video/66Y0GuF9Rgo/видео.html
Organic tests
Просмотров 854 года назад
Learn how to carry our reactions to identify amines, carboxylic acids, primary alcohols, aldehydes and ketones. Now have a go at identifying unknown organic solutions
Testing foods for protein
Просмотров 834 года назад
See how to test different foods for proteins. Do bread, cheese spread, banana and milk contain proteins?
Testing foods for lipids (fats)
Просмотров 2,5 тыс.4 года назад
See how to test different foods for lipids. Do bread, cheese spread, banana and milk contain lipids?
Testing foods for starch
Просмотров 2654 года назад
See how to test different foods for starch. Do bread, cheese spread, banana and milk contain starch?
Testing food for reducing sugars
Просмотров 9104 года назад
See how to test different foods for reducing sugars. Do bread, cheese spread, banana and milk contain reducing sugars?
Food tests (testing foods for macromolecules)
Просмотров 9 тыс.4 года назад
Learn how to test different foods for protein, lipids (fats), starch and reducing sugars. Have a go at identifying the food groups in bread, cheese, banana and milk.
TLC (thin layer chromatography) of pigments from spinach
Просмотров 20 тыс.4 года назад
Learn how to extract photosynthetic pigments from plants. Learn how to prepare and run chromatography to separate the plant pigments. See the results and calculate Rf values for the pigments.
Extracting fat from milk
Просмотров 12 тыс.4 года назад
Learn how to use solvents to extract the fat from milk. Use this to calculate the amount of fat in milk.
Fizzy drink distillation (short)
Просмотров 544 года назад
Learn how to distil the components of fizzy drinks. Shows you how to distil the drink into three components. See how to test the component parts for smell, pH and sugar content. For more details on testing for sugars see ruclips.net/video/k65wgrP25xo/видео.html
Fizzy drink distillation (Raspberryade) - Part 2 testing the products
Просмотров 294 года назад
Fizzy drink distillation (Raspberryade) - Part 2 testing the products
Fizzy drink distillation (Raspberryade) - Part 1 distillation
Просмотров 414 года назад
Fizzy drink distillation (Raspberryade) - Part 1 distillation
Identifying halides in road grit
Просмотров 314 года назад
Identifying halides in road grit
Identifying unknown inorganic solutions by cation and anion tests
Просмотров 19 тыс.4 года назад
Identifying unknown inorganic solutions by cation and anion tests
Using spectrophotometry to determine the concentration of unknown copper sulphate solutions
Просмотров 7 тыс.4 года назад
Using spectrophotometry to determine the concentration of unknown copper sulphate solutions
Determining the melting point of a solid (aspirin)
Просмотров 5 тыс.4 года назад
Determining the melting point of a solid (aspirin)
Measuring conductivity of salt solutions
Просмотров 1,6 тыс.4 года назад
Measuring conductivity of salt solutions
Preparing filter paper
Просмотров 9255 лет назад
Preparing filter paper
Using a micropipette
Просмотров 125 лет назад
Using a micropipette
Gel electrophoresis
Просмотров 205 лет назад
Gel electrophoresis
Making an agarose gel for gel electrophoresis
Просмотров 1635 лет назад
Making an agarose gel for gel electrophoresis
Culturing microbes - streak plate (short)
Просмотров 115 лет назад
Culturing microbes - streak plate (short)
Culturing microbes - slope culture (short)
Просмотров 5755 лет назад
Culturing microbes - slope culture (short)
Culturing microbes - streak and slope cultures
Просмотров 1825 лет назад
Culturing microbes - streak and slope cultures
Pouring agar plates and slopes
Просмотров 1345 лет назад
Pouring agar plates and slopes

Комментарии

  • @Meleeman011
    @Meleeman011 19 дней назад

    jfc, did you have to use hexane and isopranol?

  • @AnthonyNonya-s7c
    @AnthonyNonya-s7c Месяц назад

    Thank you Ma'am!

  • @RaytheRat5
    @RaytheRat5 3 месяца назад

    im doing a test on this and literaly have no idea with the reduceing sugar one what are we eaven looking for??

  • @Mallikarjun-n5j
    @Mallikarjun-n5j 3 месяца назад

    ❤❤😂🎉😢

  • @Airpodscandy581
    @Airpodscandy581 3 месяца назад

    go to hell

    • @nailasymmone
      @nailasymmone 3 месяца назад

      why u pressed over a science video 💀

    • @Airpodscandy581
      @Airpodscandy581 3 месяца назад

      @@nailasymmone i needed 2 for school nigga

  • @palidandanse4085
    @palidandanse4085 3 месяца назад

    Forgot I had this account but I'm actively doing a test as I watch this

  • @Explore_with_ZY
    @Explore_with_ZY 3 месяца назад

    perfect one. Great job, you just showed the whole procedure with such a simplicity.

  • @krstev29
    @krstev29 6 месяцев назад

    But ex. FeSO4 precipitate is blue-green and not white?!

  • @krstev29
    @krstev29 6 месяцев назад

    Can you give a place where I can study theory for this

    • @Mahi-hh5xj
      @Mahi-hh5xj 6 месяцев назад

      Allery chemistry has a video on qualitative analysis and you can also use the detailed notes on physicsandmaths tutor

    • @krstev29
      @krstev29 6 месяцев назад

      @@Mahi-hh5xj For me, finding the "cation" part is easy, but the "anion" part is really difficult, can you give any tips, I need it for a competition in 4 days

    • @krstev29
      @krstev29 6 месяцев назад

      @@Mahi-hh5xj Can you send a link of the notes

  • @konstantindimov3153
    @konstantindimov3153 7 месяцев назад

    Hello, are you using silica gel or paper as a stationary phase?

  • @Noone-d3c6s
    @Noone-d3c6s 7 месяцев назад

    Is it necessary to add nitric acid for anions test??

  • @tizicyc
    @tizicyc 8 месяцев назад

    thank you

  • @aydinbaris4423
    @aydinbaris4423 11 месяцев назад

    How much fat was extracted from 7ml milk

  • @jeandamour1229
    @jeandamour1229 Год назад

    now i understand

  • @abrahamlincoln7912
    @abrahamlincoln7912 Год назад

    What’s the molarity of this solution? And to how many decimals?

  • @buoazej
    @buoazej Год назад

    How much NaHCO3 will be obtained after mixing Na2CO3 with water containing atmospheric CO2? Is reaction "Na2CO3 +H2O +(atmospheric) CO2 -> 2 NaHCO3" exothermic?

  • @foodtechnologist838
    @foodtechnologist838 Год назад

    8

  • @saptarshisen007
    @saptarshisen007 Год назад

    What is 2nd solvent mixture added? Time 1:06 sec???

    • @Zoe-sh3hl
      @Zoe-sh3hl 2 месяца назад

      Hexane I think

  • @Sebastianmaz615
    @Sebastianmaz615 Год назад

    Is that milk safe to be consumed by humans after extracting the fat. Hearing the names of the solvents used would keep me from drinking the milk. 😊

  • @lilibeldelapuente2163
    @lilibeldelapuente2163 Год назад

    Did you centrifuge the bottom layer?

  • @jabedhasan1765
    @jabedhasan1765 Год назад

    Ehat would be the ration of hexane and isopropyl alcohol?

  • @radhan811
    @radhan811 2 года назад

    Thank you. it will help me in my pratical exam

  • @uzmaawan4867
    @uzmaawan4867 2 года назад

    Kindly share notes

  • @MimicMasters
    @MimicMasters 2 года назад

    thank you

  • @lameckfuraha123
    @lameckfuraha123 2 года назад

    Thank you

  • @pain9250
    @pain9250 2 года назад

    U did it wrong u okuz

  • @morlanius
    @morlanius 2 года назад

    not out the top?

  • @lolaabdoanas
    @lolaabdoanas 2 года назад

    Amounts of milk to solvents?

  • @sid_rawat944
    @sid_rawat944 2 года назад

    Tqsm ❤️

  • @amekranines6601
    @amekranines6601 2 года назад

    What is the solvent ? I couldn’t hear it

  • @Idk-ij1yy
    @Idk-ij1yy 2 года назад

    Hey is there any way to improve this method

  • @joostbannink9088
    @joostbannink9088 2 года назад

    Can you also use other solvents? We cant use hexane.

    • @morlanius
      @morlanius 2 года назад

      yes, you don't have to stick to hexanes you can use almost any non-polar solvent.

  • @Idk-ij1yy
    @Idk-ij1yy 3 года назад

    thanks so much!

  • @aliaziz5629
    @aliaziz5629 3 года назад

    Thank you, was too helpful

  • @wins.5428
    @wins.5428 3 года назад

    Just a question; I don’t understand the last part where you say you’re going to evaporate the solvent; what method are you using? Heating?

    • @allispracticalscience503
      @allispracticalscience503 3 года назад

      The solvent is evaporated by gently heating it in a water bath within a fume cupboard

  • @anuppardey4029
    @anuppardey4029 3 года назад

    Respected mam, can you tell me what you used for complexing copper sulphates such as EDTA or any else. If you used EDTA then how much concentration of EDTA and how much quantity you added. or you directly took copper sulphate solution for absorbance. please replay.

  • @fondueman1972
    @fondueman1972 3 года назад

    May I know what do you called this method of fat extraction? Thank you

  • @하은-j4w
    @하은-j4w 3 года назад

    would this be a quantitative analysis?

  • @gladiatr6514
    @gladiatr6514 3 года назад

    How much Agno3 concentration

  • @S-44n
    @S-44n 3 года назад

    thank yyyoouuu , keep doing 3>

  • @copyrightfreemusic4157
    @copyrightfreemusic4157 3 года назад

    Which solvent your using?

    • @allispracticalscience503
      @allispracticalscience503 3 года назад

      It was a mixture of hexane (3 parts) and isopropanol (2 parts)

    • @Kimberly-ur5rw
      @Kimberly-ur5rw 2 года назад

      @@allispracticalscience503 in terms of volume or mass?

  • @tergelmaasukhbaatar8331
    @tergelmaasukhbaatar8331 3 года назад

    when i did it in school used the grass with sand i dont know what will the sand do tho

    • @allispracticalscience503
      @allispracticalscience503 3 года назад

      The sand will help to grind down the leaf structure and break open the cells so it is easier to extract the photosynthetic pigments

  • @sourabhbhartia5241
    @sourabhbhartia5241 3 года назад

    What is the chemical used other than acetone while sample preparing

    • @allispracticalscience503
      @allispracticalscience503 3 года назад

      it is hexane

    • @evamoses9720
      @evamoses9720 3 года назад

      @@allispracticalscience503 why do you mix hexane and acetone when grinding the leaves? what is the purpose?

    • @allispracticalscience503
      @allispracticalscience503 3 года назад

      @@evamoses9720 Leaves contain many different pigments for photosynthesis. Some of these are more soluble in hexane and others are more soluble in acetone. By using a mix of both you are more likely to extract all the different pigments

    • @evamoses9720
      @evamoses9720 3 года назад

      @@allispracticalscience503 thank you!! ☺️☺️

  • @maxinemauger7699
    @maxinemauger7699 3 года назад

    Thank you!

  • @andrewlight1492
    @andrewlight1492 3 года назад

    thank you so much 😊😊

  • @higuyonfire
    @higuyonfire 3 года назад

    Yo you have all this lab equipment but you can't buy a 15 dollar camera stand to be able to show us this without shaking the whole time lmao. Either way thank you for showing us this and putting up the effort to do the video to educate people.

  • @survivalishard3898
    @survivalishard3898 3 года назад

    its not cheese spread its cream cheese!!!

  • @vienes814
    @vienes814 4 года назад

    #onlineschool

  • @aiaspilarta5038
    @aiaspilarta5038 4 года назад

    hi philippines

  • @thelbpmastr
    @thelbpmastr 4 года назад

    Guys, we all know what we're here for. School assignments.