Science-Making Hokey Pokey

Making Hokey Pokey

Equipment

50g of sugar

1 teaspoon of water 

1 table spoon of goledn syrup

1/2 teaspoon of bicarbonate of soda

METHOD

• Put all of the ingredients except the  bicarbonate of soda into a saucepan and place on a low heat.
• Stir until all the sugar has dissolve. Raise the heat slightly so that it bubbles, and stir occasionally until you cannot feel any sugar at the bottom of the pan.
• Take off the heat
• Add baking soda and stir
• Watch what happens it should froth up
• Pour into your tinfoil sheet
  Allow to cool

Science-Testing for Carbon Dioxide Gas

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 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 the test tube rack.

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 your 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 the Carbon Dioxide present. We discovered that Carbon Dioxide was present.

We also tested the experiment in Lime Water.

OBSERVATION

Solution turned from colourless to a cloudy colour. We discovered that Carbon Dioxide was present.

Science-Burning Metals

OBSERVATION

Today in science we burnt the metals Magnesium, Copper and Iron. With the Magnesium it first was a Metallic Lustre then when we burnt it made a bright white light and then turned into ash. With the Iron it was first a Metallic Lustre then we burnt it and made the flame go from blue to Orange. With the Copper first it was bronze and when we burnt it it stopped the flame from going any higher.

Science-Metals and acids

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 price of metal, safety glasses.

METHOD

•Light your Bunsen burner

•Add your sample of metal to your test tube. Add 2mL of acid

•Carefully invert the boiling tube above the test tube containing the metal and acid

•Hold the test tubes above for a few minutes, leaving time for the inverted boiling tube to fill with gas

•When you think the tube is full, your lab partner should light a wooden splint

•Carefully, but Quickly, tilt th boiling tube of gas upwards and insert the burning splint into the mouth of the test tube

English-Plastic bags

Making salts-Science-10/5/18

Making salts

AIM-To produce sodium chloride salt by carrying out a neutralisation reaction.

METHOD-

• Using the measuring cylinder measure 10mL of HCI an pour it into your 50mL beaker. Add dilute NaOH a w drops at a time while stirring with a glass rod.
• Every 10-15 drops stop adding the NaOH an use the glass stirring rod to transfer a drop of the solution to a spotting tile. Test its pH using Universal Indicator.
• Keep adding NaOH and testing the solution by repeating step 2. As you get closer to neutral you may need to test the solution after every drop.
• Pour the neutral solution into an evaporating basin an evaporate the water out of the water of the solution using the equipment set up shown above.

Testing pH levels-Science-3/5/18

Testing pH levels

AIM-to test the pH of 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 a spot on your spotting tiles. if a substance is solid or powdered you will need to mix it with a few drops of water before mixing.
• Test the chemicals with litmus papers.
• Test each chemical with a few drops of universal indicator.