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Showing posts with label science. Show all posts
Showing posts with label science. Show all posts

Thursday, 2 December 2021

Fingerprint Balloons

 Aim: To make our fingerprint on a balloon

Equipment

  • Balloon
  • inkpad
  • finger
Method

  1. stamp your finger into the ink
  2. put that inked finger onto the uninflated balloon
  3. blow the balloon up 

Findings

My fingerprint has 47 ridges
my finger print is an arch print



Thursday, 28 October 2021

Chilli tasting


Video(s) that contains 

Funny aspects

Chili eating compilation

Facts about chili

Explains SHU

Food Theory 'Beat the Heat'


5 Facts about chilli

1. The scovile heat unit scale (SHU) was invented in 1912 by pharacist Wilbur scovile in an attempt to find a heat producing ointment.

2.The burning sensation is mainly caused by the chemical capsaicin. Capsaicin is found in tiny glands in the chilis placenta, when you eat a chili the capsaisin is released into your saliva and then binds to TRPC1 recepotors in out mouth and tounge.

3.Chillis are considered a fruit, they are consideered a fruit because they are a member of the nightshade (Solanaceac) family and they are related to tomatos, cherrys and eggplants.

4.Some chillis are used in different medical things like nasel spray and dermal patches.

5.Only mammals are sensitive to the chemical capsaicin making it so fish arnt effected by chilli peppers.


Hypothisis
I think by drinking milk it will remove the heat because it has a chemical in it that binds to capsasin reducing the heat.

Method

Equipment

  • Hot Chilli sauce
  • popsicle stick/tooth pick
  • Drinks- soda, water, milk
  • Timer

Instructions
  1. Get your equipment ready
  2. get a drop of hot sauce on your toothpick/popsicle stick
  3. lick the hot chilli sauce
  4. start the timer
  5. after 2 mins, drink your drink
  6. after 5 mins, how hot is your mouth
  7. repeat the experiment but with a different drink
Results
How hot was the chilli after 2 mins
5/10 (water) (Tane)
7/10 (coke) (Tane)
3/10 (milk) ( Me)

how hot was the chilli after you drank your liquid (Coke, Milk or water)
2/10(water) (Tane)
4/10(coke) (Tane)
0/10(milk)(Me)

How hot was it after another 3 mins (after you drank your liquid)
2/10 (water)(Tane)
 2/10(Coke)(Tane)
 0/10 (Milk)(Me)

Tane's blog Tane


Thursday, 30 September 2021

Hokey Pokey

 ingredients

  • 4 tbsp Sugar
  • 2 tbsp Golden syryp
  • 1 heaped tsp baking soda
  • Pot
  • Tablespoon and teaspoon
  • Bunsen burner
  • Paper cups

Method
  1. put 4 tbsp of sugar and 2 tbsp of golden syrup  into a saucepan/pot and melt it.
  2. bring to the boil and simmer gently for 5 minutes
  3. add baking soda and stir vigrously
  4. put the hokey pokey on a peice of baking paper to cool
Explination
Why do we stir it?
We stir it to stop the sugar from burning, the movement keeps all the sugar at the same temprature stopping it from burning.
explain why the hokey pokey rises and bubbles?
The hokey pokey rises and bubbles because of the gas the baking soda creates.

Thursday, 23 September 2021

Neutralisation

Today in science class we tried to make the colours in the rainbow using a universal indicator, hydrocloric acid and sodium hydroxide. here is what happened

Matterials
  • 2 pipetts
  • Hydrocloric acid
  • Sodium hydroxide
  • Test tube rack
  • Test tubes
  • Neutraliser

Method
  1. Take a test tube rack with 1 boiling tube at each end of the rack and 4 test tubes.
  2. Quarter fill  the boiling tube at one end with Sodium hydroxide
  3. Quarter fill  the boiling tube at one end with Hydrocloric acid
  4. fill each test tube with 5 drops of univeral indicator 
  5. using the pipettes slowly drop in different amounts of sodium hydroxide and hydrocloric acid into the indicator to make each colour
  6. make sure you dont mix the pipettes
We managed to get every colour apart from yellow

Tuesday, 21 September 2021

The Mandela Effect

Recently I have been very intrested in the science of the 'Mandela Effect'. I decided I would listen to a podcast (Sci Guys episode 93 'Mandela Effect the science of false memories'). and I found it really interesting, so I decided to share what I learnt on my blog. Here is everything you need to know about the Mandela Effect.



The History of the Mandela Effect
The Mandela Effect is basically just a fancy way of saying false or fake memories. The Mandella Effect originated in late 1980s/early 1990s, It got its name when Fiona Broome explained in great detail how she remembered that former president of South Africa Nelson Mandela died in the 1980s while in prison ,even though he lived till 2013. 

She could describe the news coverage that happened because of his death and even a speech from his widow that never happened, and it wasn't that she was the only one who remembered that there were many people who thought they remembered the exact same thing.

What is the Mandela Effect?
Mandela effect actually is, many doctors think that the Mandela is a form of confabulation which is like a brainy way of "honest lying" which is like someone creates a false memory, but doesn't mean to lie to others.  They are just filling gaps in their own memories. Many examples of the Mandela effect are close and similar to the original memory.

 Researchers believe that people, even in large groups use confabulation to 'remember' what they feel is the most likely sequence of events. There are other aspects of memory that can lead to the Mandela effect, this includes something known as a false memory where you recall an event that isn't accurate. This is often a struggle for eyewitnesses to crimes or other things along those lines.

Some examples of the Mandela Effect
'I am your father' Vs 'Luke I am your father' there was never actually a 'Luke' in that sentence

'Kit-kat' Vs 'kitkat' KitKat had no dash



Is there black on the end of pikachus tail or not? Pikachu has no black on his tail












'Looney tunes' Vs 'looney toons' it is spelt 'Looney tunes'















Thursday, 16 September 2021

Litmus Paper (science class)

 Materials:

  1. Red litmus paper
  2. Blue litmus paper
  3. Sodium hydroxide
  4. Hydrcloric acid
  5. Pipette
  6. 4 test tubes
Steps:
    1. Rip the litmus paper in half and put it in each test tube
    2. Add 3 drops of Hydrocloric acid to the blue litmus paper in test tube 1
    3. Add 3 drops of Hydrocloric acid to the red litmus paper in test tube 2
    4. Add 3 drops of Sodium Hydroxide to the blue litmus paper in test tube 3
    5. Add 3 drops of Sodium Hydroxide to the red litmus paper in test tube 4
Findings
Blue litmus paper when added to hydrcloric acid turned red
Blue litmus paper when added to Sodium hydroxide stayed blue
Red litmus paper when added to Hydrcloric acid stayed red
Red litmus paper when added to sodium hydroxide went blue


Acid (Science class)

 What is an acid?

An acid is a liquid that has a PH(Power of hydrogen) level of between 1-7, it tastes sour and is used batteries and in our stomachs



What are 3 examples of acids?

Lemons- Citric acid

Vinegar-acetic acid

Batteries- sulphuric acid


Red Cabbage indicator experiment

Materials

  1. Red cabbage
  2. Beaker
  3. Bunsen burner
  4. Pipette
  5. Sodium Hydroxiden
  6. Hydrocloric Acid
  7. Test tubes
  8. Paper towel
  9. Test tube rack
  10. Water
  11. Dishwashing powder
  12. Floor cleaner
  13. Fabric softener

Sodium hydroxden-PH level of 12-13
Hydrocloric acid- PH level of 2 (also corrosive)
Dishwashing powder-Ph level of 12-13
Floor cleaner-Ph level of 3
Fabric softener-Ph level of 2

Wednesday, 11 August 2021

Yeast (science)

Yeast definition 
Yeast it all around us, yeast are fungi, it is made of egg shaped cells that you can only see through a microscope. Yeast is a levening agent and is most commonly used in bread products. The earliest yeast specimen found today was from 3100bc in achient egypt. Yeast needs to be waken up from its hibernative state to be used and it needs sugar and warm water to begin working. Yeast is also used in making alcoholic beverages.
Aim: To look at how yeast us used in foods.

Equipment
  • Spoon
  • Kettle
  • Bowl
  • Beaker
  • Cloth sleve
  • Funnel
  • Plastic
Materials
Bug (for a group of 3)
  • 50ml warm water
  • 1/2 tsp active dried yeast
  • 1/2 tsp suger
  • 1/2ground ginger
Gingerbeer (for 1 liter)
  • 3/4 cups of sugar
  • 1/2 tsp cream of tartar
  • 1L cold water
  • juice of 1/2 lemon
  • 1 tsp ginger beer bug
Method

  1. In a large bowl put the sugar and cream of tartar then ad the warm water
  2. stir to dissolve the sugar before adding the cold water
  3. add the ginger beer bug to the large bag of cold water
  4. stir well then pour into your clean bottle
  5. label your bottle with your group names
  6. place all the bubbles in your class container
  7. store in a cool dark place for a week before drinking
  8. make sure you open the bottle in a kitchen sink as it might overflow. Open the cap bit by bit to allow the ear to escape
  • The ginger beer must be drunk over the 6 days
  • you must provide your own botttle



Wednesday, 4 August 2021

Chilli tasting


deffinition

a small hot-tasting pod of a variety of capsicum, used in sauces, relishes, and spice powders.

The chemical in chillis that make them hot is called capsasin.

Chilli definition and meaning | Collins English Dictionary

Chilli plants look like this

How to: grow your own chilli plants on a kitchen windowsill - David DomoneyGrowing Chillies - How To Grow Chili Peppers From SeedGrowing Hot Peppers – How To Grow Chili Peppers At Home


6 hottest kinds of pepper

(SHU = Schovile heat units)

Carolina Reaper 2,200,000 SHU

  • Trinidad Moruga Scorpion 2,009,231 SHU

  • 7 Pot Douglah 1,853,936 SHU

  • 7 Pot Primo 1,469,000 SHU

  • Trinidad Scorpion “Butch T” 1,463,700 SHU

  • Naga Viper 1,349,000 SHU


The schovile heat scale
The schovile heat scale works by measuring the amount of schoviles (Pungency of chilli peppers) in a chilli pepper showing how hot a chilli is.


Aim
To see what is the best way to cool down the hot chilli tastein your mouth when eating chilli.


Hypothisis 
I think that by using Milk I will be able to reduce (or even remove) the chilli taste from my mouth because of the casein in milk. Capsasin in non soluable as it is an oil although milk does disolve it.

Equipment:
1. Milk
2.Water
3.Coke
4.Tasting cup
5. Chilli

Conclusion
Milk had a small efect on the chilli imidiatly and completly got rid of it after  3 minutes.
Coke also had a small effect on the chilli imediatly, then after 3 minutes it disapered all together
Water had no effect imediatly, after 3 minutes it removed the taste slightly

Milk would be the best option for you if you have it otherwize reach for flat coke (or any other flat soda).

Milk could be a solution when eating spicy food because milk helps your mouth handle capsain (the oily chemical compound in chili or anything spicy), capsain binds to a receptor in the tounge and creates a burning sensation, casein the protein found in mill and other dairy products binds to the capsasin and washes it away.

Blind taste testing (Science)

 Today in Science we did a blind taste test, we did this to see if we could identify the difference between swwe, biter, sour and salty. We had to work in pairs, I worked with Isabella, one of us had to be blindfolded and the other had to guide them around , Isabella was first and I was second (taste testing).

Equipment

1. Samples (1-9)

2. Blindfold glasses (we used glasses and paper)

3.Recording chart

4.Ice cream sticks


Method

1. Get saftey glasses and make a blindfold

2.Set up your charts make sure the person knows where to record your responses.

3.Using an icecream stick taste the samples

4.Record your results (including what you thought it was and the taste (bitter, sweet, sour, etc)

Monday, 16 March 2020

Different types of sentences

For the past few weeks in Hur 3 we have been learning about 3 different types of sentences Very short sentences, the W start and Adverb start.  The very short sentence has 5 words or less and is commonly known at the end of a story to create suspense or drama. For example " the seedling grew" or " He slowly planted the seed" The W start is a sentence starting with one of the four w words where, while ,whilst, and when. For example. while the seed sprouted , we watched carefully, or ,when I filled the beaker the bean fell down. The adverb start  is a sentence that starts with a adverb for example , surprisingly the bean spouted, or annoyingly the bean flipped upside down.

Friday, 10 August 2018

Whats then matter ?

For the past few weeks I have been learning about liquids , solids and gas we made a slide show to show what we knew about liquid , solids and gas or as I say different types of matter .
I found copying and pasting lots of dots hard .
but I found answering questions easy .
could you please leave any comments if there is something that I can do to make it better !