How to make Hokey Pokey

What you need:
50g sugar, 1 table of water, 2 tablespoons of golden syrup, 1 teaspoon of bicarbonate soda

Method:

1. Put the ingredients except for the bicarbonate of soda in 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 froth up with bubbles in a pan
6. Pour out into your tinfoil sheet
7. Allow cooling.

Testing for Carbon Dioxide Gas

Testing for Carbon Dioxide Gas

Aim:To show that carbon  dioxide  gas is produced when a metal carbonate react 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 carbonate, 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 

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.

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Making a metal Oxide

Aim:To make a metal oxide and observe the difference in properties of the product compared to the reactants.

Equipment:A piece of magnesium,Bunsen burner,Safety glasses,metal scissor tongs.

Method: 1.Light your Bunsen burner.

2.Hold your piece of magnesium in the scissor tongs.Ensure   you are  holding onto the very tip of the magnesium

3.Place the other end of the magnesium into the Bunsen flame

4.When the magnesium beings to burn,do not look directly at it,as the light emitted can permanently damage your eyes.

Observations:Before the reaction it was a shiny metallic luster,But after the reaction it turned into a bright white light.

Equation of this reaction:
Magnesium + Oxygen ------- Magnesium oxide  

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,wooden 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 parent should light a wooden splint.
6.Carefully, but quickly, tilt the boiling tube full of as upwards and insert the burning splint into the mouth of the test tube

Observations: It will make a popping sound

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Testing pH

To test the pH of a range of household chemicals 

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

1.Add a few drops of each chemical to a spot on your spotting tile.if a substance is solid or powdered you will need to mix it with a few drops of water before testing it.

2.Test the chemicals with litmus papers

3.Test each chemical with a few drops of Universal indicator