Wind Racer Challenge

Aim: To make a wind racer that goes the furthest out of the class.

Equipment:
Large paper (maybe)
Tape
Bamboo Stick
String
Popsicle sticks
Plastic bags

Method:

1. Construct the mast by adding it onto the trolley thing
2. Make the sail using the plastic bag or the paper. Use The Popsicle sticks to strengthen it so it doesn't cave inwards. We have to shape it correctly so it is able to catch the wind to make it go for longer
3. Add sail to the mast.
4. Strengthen mast just to give it more support. 

Testing for the presence of oxygen

Aim :
To carry out a test for the presence of oxygen gas.

Method:

1. Light your Bunsen burner
2. Add the manganese dioxide to the boiling tube and place it in your test tube rack. 
3. Add 2mL of hydrogen peroxide
4. Light a splint and let it burn for a while 
5. Blow out the splint and insert the glowing embers in the mouth of the test tube. 

Observations:

When we added the hydrogen peroxide the manganese dioxide foamed up about an inch or two and then when we added the glowing splint the oxygen present from the reaction of the hydrogen peroxide and the manganese dioxide it re lit the splint because of the heat from the glowing embers. 

Discussion: 

The manganese dioxide and the hydrogen peroxide are mixed because of the rapid expansion in gas level in the small enclosed space of the boiling tube, it foams up. After that reaction the boiling tube because warm to the touch. 

Conclusion:

So this experiment was very enjoyable and some things came as a surprise like the foaming up and the re lighting of  the splint was pretty cool but overall it was a good experiment.  

Testing for hydrogen gas

Aim: To show that hydrogen gas is produced when a metal reacts with acid.

Method:

1. Light the Bunsen burner
2. Add your sample of metal to your test tube, add 2mL of acid. 
3. Carefully invert the boiling tube above the test tube containing the metal and acid
4. Hold the test tubes together fr a few minutes, allowing time for the inverted boiling tube to full with gas.  
5. When you thing the tube is full , your lab partner should  light a wooden splint. 
6. Carefully but quickly, tilt the boiling tube full of gas upwards and insert the burning splint into the mouth of the test tube 

Results : 

It fizzed when we added the acid and metal together, and when we put the flaming splint into the test tube, it made a squeaking sound. 

Discussion: 

Well when we started and put the acid and metal together it started fizzing up because of the chemical reaction of metal and acid.  And when we had captured all of the hydrogen in the top that the metal, acid reaction made, and then brought fire to it, it made a screeching sound and that cause of that was the Hydrogen reacting with the oxygen around it when we brought heat into the mix. 

Conclusion: 

When we did it the experiment worked and it did exactly what we expected it to do. And overall it was a really good experiment and it was a great time. 

Testing Ph

AIM: To test the pH range of household chemicals

Equipment: A variety of household chemicals, spotting tile, red litmus paper, blue litmus paper, Universal indicator soloution, safety glasses.

Method:
1:add a few drops of each chemical to a spot on your spotting tile. if a subtance is solid or powdered you will need to add a few drops of water before testing it.
2:test the chemicals with the blue and red litmus paper.
3. Test each chemical with a few drops of universal indicator.

Results:

Chemical being tested	Colour in blue litmus paper	Colour in red litmus paper	Colour in Universal indicator
Toilet cleaner	It went red	Nothing	Red
Dish soap	Went red	Nothing	Yellow
Spray n Wipe	Went red	Blue	Blue
Baking soda	Nothing	Nothing	Blue

Discussion: So back we did this experiment we got everything we needed and we got to work. After it was all set up we got to add the indicator into one of each of the little half spheres to tell us what the pH level was. In the next row of treys we added blue litmus paper and if it went red it means its an acid and if it stayed blue it is either a base or a neutral substance. The final one we added red litmus paper and it is the same as the blue but in reverse. With the universal indicator the more red it goes it means the stronger an acid and the more blue - violet it goes it means the stronger the base it is. 

Conclusion:                                                                                       Evidence from the investigation

Chemical being tested	Acid or base
Toilet cleaner	Acid	It went red with indicator and blue litmus paper
Dish soap	Acid	It went red with indicator and blue litmus paper
Spray n Wipe	Base	It went Blue with indicator and Red litmus paper
Baking soda	Base	It went Blue with indicator and Red litmus paper

Neutralisation

Aim:
To Observe A Neutralization reaction.

Equipment: A test tube, Test tube rack, A base, an acid, Dropper, Universal indicator.

Method:
1. Add approximately 1-2mL of Sodium carbonate and place the test tube into the test tube rack. Add 3-5 drops of universal indicator solution.

2. Using a dropper add HCI drop by drop. be careful because adding even a small amount of extra acid can mean you'll miss the neutralization point.

Results and Observations:
When we added the universal indicator it changed colour to the blue for the base, and when we slowly added more and more acid it slowly changed to a green colour. we added to much so it went to yellow then orange but we recovered it with more base to make a green.

Discussion: With this as it was changing colours we could tell if we needed to add more of either the base or acid to be able to neutralize it. as we added it drop by drop we slowly saw it starting to mix but it stayed mostly separate because of the different density's of the solutions.  We tapped the test tube to help speed up that mixing process but it looked cool while doing it. When the solution in the test tube is blue it means it is highly concentrated with a base and with a red it is highly concentrated with the acid and when it is green it means it is 50/50 or close enough of a balance so it is sitting at a neutral point. Neutralization is when a solution is in between being to acidic and being a base. So neutralization is finding that mid point in between them both.

Conclusion: For this ours worked well and we were able to neutralize it.

Famous scientist?

What was he famous for? 
Nikola Tesla was a scientist that invented things like Tesla coil, the alternating current, Electricity and he is the person that discovered the rotating magnetic field. 

Basic info... 
Nikola Tesla was born in Smiljan, Croatia in 1856
He was one of five children. his siblings names were Dane, Angelina, Milka and Marica 
He died on the 7th of January 

Any affect on science today?
Nikola has had a big affect on science and the world itself because he was the one that created the tesla coil and electricity and both of them things are still used to this day so his inventions have made a massive impact on the world and it has helped scientists because they can use his inventions today to make further research discernment today 

Is smoking good or bad?

What does smoking do?

Smoking releases over 5000 chemicals into your body, and many of them being the cause of a lot of the cancers you can get.  The smoke that comes out of it slowly after a bit of time damages all of the nerves in your nose and that can result in a loss of smell. When you smoke there is a black substance called tar that is released into your mouth and it builds up around your gums and teeth and it eats away at your teeth and gums and it slowly turns into decay. When the smoke goes into the lungs it enters the blood and it takes all of the oxygen and replaces it with carbon monoxide before it gets to the lungs so it causes a loss of breath because there isn't any oxygen to be taken around the body. When the carbon monoxide is released into the blood it damages the blood vessels so it makes the walls thicker increasing the chance of the blood clots and heart attacks.  Smoking carry's this chemical to your brain which makes it addictive. Cigarettes can cause a loss of eyesight and a loss of strength in your bones and make them more fragile.

Long term effects
The long term effects can be loss of breath
Fragile bones
Cancer
Blood clots
Higher risk of heart attacks and strokes.
More of an addiction

Benefits of giving up
The benefits of giving up is a slow recovery to becoming healthy again but eventually is will get better. The nerves in the nose recover so you regain the seance or smell. You can reduse the critical chance of a heart attack or a stroke.