Metal carbonates and acid experiment

Aim - to show that carbon dioxide gas is produced when a metal carbonate reacts with acid .

Equipment - two boiling tubes, delivery tube and bing, 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 metal carbonate to one of the test 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 .
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.

Observations - when we put the lit splint in the gas test tube it got extinguished due to the presence of carbon dioxide.

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Science experiment - 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 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 and 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.

Outline how you could tell a chemical reaction was occuring in the test tube?
When we put the burning splint in the test tube it made a loud pop noice.

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English

Testing Ph (Science)

The aim of this experiment is to test the PH range of household chemicals.


Equipment: A variety of household chemicals, Spotting tile, Red litmus paper, Blue litmus paper, Universal indicator solution and safety glasses.


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


This is our table of results:

Chemical being tested	Colour in blue litmus	Colour in red litmus	Colour in universal indicator
Easy off bam	Dark blue	Dark blue	Dark purple
Dettol	Red/pink	Red	Yellow
Pledge	Blue	Red	Yellow
Morning fresh	Blue	Purple	Green
Active fresh	Red	Red	Yellow

Universal indicator
The universal indicator shows us how strongly acidic or alkaline the solution is. Universal indicator has many different colour changes, from red for strong acids to dark purple for strong bases,In the middle neutral PH 7 is indicated by green.
Litmus indicator
Litmus indicator solution turns red in acidic solutions and blue in alkaline solutions. Litmus also comes in paper form. Blue litmus paper will turn red in an acidic solution and remain blue when added to an alkali solution. Litmus does not tell you how strong the solution is.