Science - Volcano eruption

Hello everyone, in Science we are learning about Volcanoes, in this project my team and I researched about the volcanoes we wanted to make. The Volcano that we made is Taal Volcano. Here is the thing we had discovered. 

A caldera forms when a volcano erupts and then collapses, this creates a large depression.




Types of rock formations that form around the volcano.

Olivine Basalt is a type of mineral.

Andesite


Plan
Make a border around the volcano and make it look like the volcano looks like it’s submerged in water.
We need to make it slightly taller than the bottle we’re going to use while still making it look like just the very top of the volcano.

Making the base out of cardboard, we will roughly cut out the shape of the volcano.

Reaction: Elephant's Toothpaste
Hydrogen Peroxide and Potassium Permanganate - Turns brown as a chemical reaction between the oxygen and the Potassium Permanganate.

Put warm water in a bottle, then put Potassium Permanganate crystals. Mix.

Add 1-2 drops of detergent to the mixture.

Find an open space.

Pour Hydrogen Peroxide in a measuring cylinder, pour till satisfied with the amount.

Then, quickly pour the Hydrogen Peroxide into the bottle, wait for the reaction.

DNA Extraction | Science

Aim: To extract DNA from kiwi fruit 

Equipment:

- Kiwi fruit 

- knife (to cut the kiwi fruit)

- Sand 

- Ethanol 

- Beakers

- Water 

- Heat Mat

- Bunsen Burner

- Test tube 

- Dishwashing liquid 

- Sandwich bag 

- Tripod

- Cloth 

- Spatula 

- Gauze Mat

- Glass rod

Method: 

1. Squish kiwi fruit with sand with water and pour through the cloth to collect the juice in the beaker. 
2. Use the beaker to warm the water, pour juice into the test tube with 2 drops of dishwashing liquid and rest in warm water. 
3. Add Ethanol, watch the DNA separate and collect with a spatula. 

Result: 

Discussion: The Dishwashing liquid separate the walls of the DNA cells. When we added the ethanol it separated the DNA layer from the kiwi fruit and it floated at the top of the tube. 

Land Yacht - Science

Hello Everyone, in science we made a land yacht. We are working on Forces and motion and making a land yacht is a good example of this topic.  

Aim: Our goal is to make our land yacht and who will be the faster. 

Method: Cart, card box, Plastic bag, stick and strings. 

Result: Our distance was 4.5m and our time was 7.3sec. We have to divide them together and get our score. Our score was 0.61. 

How to calculate - 

v = d/t 

v (speed) d (distance) t (time)

Conclusion: The air passed through our bow in the front of our boat. The air goes in our plastic bag and the air moves our land yacht. 

Alkaline metals

Hello everyone, this term 2, week 1 in Science, we are learning about metals. We did an experiment and we also look for the other metals in the periodic table. 

What is an Alkaline metal?

-Alkaline metal is highly reactive and they form strongly Alkali dioxide. 

What reaction did we do yesterday?

-It started to have an explosion. The sodium reacted to water and cause for it to explode. This reacted this way because of the chemicals reacting. The product and the reactants are Sodium(2Na) + Water(H20)  ⇾ Sodium oxide(Na20) + H2 

Why do these metals react this way?

It only has 1 electron which is why it's highly reactive. 

Neutralisation - Science

Hello everyone, in science we are looking at Neutralisation. 

Aim: Our aim is to find out what kind of acid or base it is or we have to find out the difference between the pH scales and if they are acidic or a base. 

Method:

1. Put some universal indicator on each test tube.
2. By using Hydrochloric acid and sodium hydroxide to create different pH scales.
3. Then observe the results.

Result:

- When the colours/pH scales are in order, we observe them properly to know if they are in the right order. 

Discussion:

- The experiment was fun because we could see the different colours and the arrange spectrum of pH scales. It was nice seeing different colour happening when pouring the acid and the base together in the test tube. The thing that we struggle with was where we have to make it around the pH of 7 to 14 because it's hard to make them without adding way too much base or acid. The acid and the base we used was quite strong so it was hard to make it in the right order but apparently, my partner and I succeed at doing that.  

Conclusion:

- The result we ended up with was the arrange spectrum of pH scales.  

Heating Zinc Oxide

Hello everyone, today in science we are experimenting on Zinc Oxide. We have to heat up Zinc Oxide and observe what happened next. 

Aim: What change happens when we heat Zinc Oxide? 

Equipment: Bunsen burner, Heat mat, Tripod, Safety glasses, Crucible Holder and Zinc Oxide  

 Results: When it was heating up it was turning yellow and when we turn it off it turns back to white. 

Discussion: When heated, the electrons in Zinc move to other levels, making it change colours.