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Thursday, 31 May 2018

Hokey Poke


Ingredients:
100g sugar
1 Table of water
2 tablespoons of golden syrup
1 teaspoon of bicarbonate of soda


Method:
1. Put the ingredients except for the bicarbonate of soda into a saucepan and place on low heat.
2. Stir until all the sugar has dissolved. Raise the heat slightly so that it bubbles, and stir occasionally until you cannot feel any sugar at the bottom of the pan
3. Take off the heat.
4. Add bicarbonate of soda and stir!
5. Watch what happens-it should all forth up with bubbles in the pan
6. Pour out into your tinfoil sheet
7. Allow cooling.

Observation:
Here is what happened.


Wednesday, 30 May 2018

Testing for carbon dioxide gas

                                                 Testing for carbon dioxide gas
Aim:To show that carbon dioxide gas is produced when a metal carbonate reacts with acid
Equipment:
Method:
  1. Light your Bunsen burner
  1. Ass a 'pea-sized' amount of metal carbonate into one of the boiling tubes.
  1. place the boiling tube into a test tube rack. Ensure you have the bung and delivery tube ready
  1. Add 5 mL of acid to the boiling tube and quickly insert the bung and delivery tube into the mouth of the boiling tube.
  1. Holding the other boiling tube with your tongs, capture the gas produced as shown in the diagram below.
  1. When you think the tube is full, your lab partner should light a wooden splint
  1. Carefully remove the boiling tube from under the delivery tube, taking care to keep it facing upright
  1. Insert the burning splint into the mouth of the test tube
Observation: It took out the flameExperiment 2Method:
  1. Light your bunsen burner
  1. Add a 'Pea-sized' amount of the metal carbonate into one of the boilings tubes.
  1. Place this boiling tube into a test tube rack. Ensure you have the bung and delivery tube ready.
  1. Buuble gas into limewater

Observation: It becomes cloudy


Thursday, 24 May 2018

Meatle and Acids

                                                           Testing for Hydrogen Gas
Aim: To show that hydrogen gas is produced when a metal reacts with acid.
Equipment: A test tube, A boiling tube, Bunsen Burner, Wooded splint, a bottle of acid, a piece of metal, safety glasses
Method:
1. Light your 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 for a few minutes, allowing time for the inverted boiling tube to fill with gas
5. When you think 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.

Observation: 

It will make a loud popping sound.

Monday, 7 May 2018

Neutralisation

Aim: To observe a neutralisation reaction

Equipment: A test tube, test tube rack, 1 mol L-1 Na2CO3 (sodium carbonate),, 1 mol L-1 HCI (hydrochloric acid), dropper or dropper bottle, Universal indicator solution.

Method: 1. Add approximately 1-2 mL 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 bottle, add hydrochloric acid drop by drop. be careful because adding even a small amount of extra acid can mean you'll miss the neutralisation point.

Observation: Changed to 
Image result for neutralisation


Friday, 4 May 2018

Testing Ph

Testing Ph

Aim: To test the pH of a range of household chemicals

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

Method: 1. Add a few drops of each chemical to a spot on your spotting tile. If a substance is solid or powered you will need to mix it with a few drops of water before testing. 2. Test the chemicals with litmus papers. 3. Test each chemical with a few drops of universal indicator.

Results:


Chemical being tested
Colour in blue litmus
Colour in red litmus
Colour in Universal indicator
Dettol
Red
Red
Orange
Morning fresh
Blue
Blue
Green
Jif
Blue
Blue
Green
Harpic
Green
Red
Red
Pledge
Blue
Red
Green

Conclusion
Space exploration is a waste of time and money.

I reckon is is good to explore to find new planets that we might be able to live on and find other forms of life.
But the money can also be spent on saving this world first.
Image result for exploring the space

Thursday, 3 May 2018

How tech has changed over time

How Tech has Changed Slide

We had to do a slide show of things that has changed over time clink on the link above