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Showing posts with label Science Chemistry. Show all posts
Showing posts with label Science Chemistry. Show all posts

Friday, September 17, 2021

Red Cabage indicator

Kia Ora readers! This blog is relating to an experiment that took place in our science class. In this experiment, we are using red cabbage, hydroalcoholic acid and hydroxide acid.

Aim:

I want to find out how to tell if something is an acid

Methode:

Equipment:
*Beaker
*Red cabbage
*Hot boiling water
*Dropper
*Test tubes
*Different samples for testing

Instructions:
1. Get your equipment ready
2. Rip the cabbage up and put it into the beaker
3. Add 100 ml of water boiling water
4. Let it brew till the water turns purple
5. Put 2cm of acid into the test tube
6. Put some cabbage water into the test tube
7. Do the same with the hydroxide
8. Mix both the acids and the cabbage water 


Results:
We were given 2 different types of acids, hydrochloric acid, and hydroxide acid, we then dropped 2 cm of the 2 different acids in 2 different tubes, and then we used a dropper to absorb the cabbage water and we then added it to the acids and the colour changed. 





Tuesday, July 27, 2021

Blind taste testing

Aim:
I want to find out how things taste.

Research:




Method:

Equipment

*Blindfold
*Unkown Food

Instructions:

1. Get your equipment
2.Put your blind on fully
3. Taste test the food
4.Is it, SWEET, SOUR, BITTER, SPICY, SALTY!?
5.Guess what food has been put in front of you
6. Record your observations in a table

Results

Food#1- When I placed the food in my mouth it tasted like lollies (which it was), then our teacher instructed us to block our nose and see what happens, when I blocked my nose I could not taste the Lollie with my nose blocked but when I unblocked my nose I could taste the flavor.

Food#2- Citric Acid, as I placed this random powder in my mouth with my nose blocked I could taste how sour our teacher was giving us. I literally felt like cold ice cream on my gums. 

Food#3- Baking powder- it tasted so bitter at the back of my tongue and I got surprised because halfway through it being in my mouth I knew I tasted it before.

Food#4- Salt- Tasted like salt, I had so much on my popsicle stick so I could really taste the flavour go down my tongue.

Food#5- Sugar- Tasted so sweet, I could taste the sweetness on my tongue, sugar was not as bad as the rest.

Food#6-Sherbert- Sherbet with no flavour, I could really feel it fizzing at the back of my tongue. It's not bad not gonna lie.