Science 31/5/18 Hokey Pokey

You will Need: 

50g Sugar

1 teaspoon Of water

1 Table spoons of golden syrup 

1/2 teaspoon of bicarbonate

Method:

1.Put all of the ingredients except the bicarbonate of soda into the saucepan and place on low heat.

2. Stir until all of the sugar has dissolved. Raise the heat slightly so that it bubbles, stir occasionally until you cannot feel any sugar at the bottom of the pan.

3.Take of the Heat.

4. Add Bicarbonate of soda and stir.

5. Watch what happens- it should all froth up with bubbles in the pan.

6. Pour out into your tinfoil sheet

7.Allow to cool. 

Metal Carbonate Experiment

Aim: To show that carbon dioxide gas is produced when a metal carbonate reacts with acid

Equipment: two boiling tubes, delivery tube and bung, Bunsen burner, test tube rack, wooden splint, a bottle of acid, small amount of metal carbonates, test tube tongs, safety glasses.

Method:
1.Light your Bunsen burner
2.Add a 'Pea-sized' amount of the metal carbonate into one of the boiling tubes.
3.Place this boiling tube into a test tube rack. Ensure you have the bung and delivery tube ready.
4.Add 5mL of acid to the boiling tube and quickly insert the bung and delivery tube into the mouth of the boiling tube.
5.Holding the other boiling tube with your tongs. Capture the gas produced as shown in the diagram below.
6.when you think the tube is full, Your lab partner should light a wooden splint.
7.Carefully remove the boiling tube from under the delivery tube, taking care to keep it facing upright.
8.Insert the burning splint into the mouth of the test tube.


Observation:The Flame got Extinguished due to carbon dioxide. We found out that the carbon dioxide was present.

Observation lime water: The solution turned from colourless to cloud which means co2 is present


Photos:

English-22/5/18

Science Blogger- Testing pH levels-3/5/18

Testing pH levels

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 

Add a few drops of each chemical to 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 it.

Test the chemicals with litmus paper.

Test each chemical with a few drops of universal indicator.