Metal Carbonates and Acid

Aim
- To show that Carbon Dioxide is produced when a metal carbonate is used with acid.

Equipment 
- Two boiling tubes
- Delivery tube and bung
- Bunsen Burner
- Test Tube rack
- Wooden splint
- A bottle of acid (We used Hydrochloric Acid)
- Small amount of metal carbonate (We used small Magnesium strips)
- Test tube tongs
- Safety glasses

Method
- Light your bunsen burner
- Add a 'pea-sized' amount of the metal carbonate into one of the boiling tubes (We just put in one strip of Magnesium)
- Place this boiling tube into a test tube rack. Ensure you have the bung and delivery tube ready.
- Add 5mL of acid to the boiling tube and quickly insert the bung and delivery tube into the mouth of the boiling tube.
- Holding the other boiling tube with your tongs, capture the gas produced as shown in the diagram below.

- When you think the tube is full of gas, your lab partner should light a wooden splint.

- Carefully remove the boiling tube from under the delivery tube, taking care to keep it facing upright
- Insert the burning splint into the mouth of the test tube. 

Observations
- Gas was stored in the boiling tube that was being held, when the burning splint was inserted the flames were quickly put out by the carbon dioxide.

Results
- As we put in the burning splint we all noticed that the flames were slowly going out. This is how we found out that carbon dioxide was created. It was scary at first because we all didn't know what was going to happen but soon realised it was kinda fun.

Conclusion
- This Experiment was really fun, I would do it again but let more carbon dioxide rest in the boiling tube because the fire would've gone out really quickly because of all the carbon dioxide that was being contained. We first tried it out with limestone in the boiling tube that soon afterwards contained the carbon dioxide because it was supposed to boil up but that didn't happen. It was still fun and I would do it again if I had the chance.

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:
- Light you Bunsen burner

- Add You sample of metal to your test tube. Add 2ml of acid.

- Carefully insert the boiling tube above the test tube containing the metal and acid (as shown in the diagram below).

- Hold the test tubes together for a few minutes, allowing time for the inverted boiling tube to fill with glass

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

- Carefully, but quickly, tilt the boiling tube full of gas upwards and insert the burning splint into the mouth of the test tube.

Result - As gas was being trapped into the boiling tube we lifted it up and away from the other test tube containing the metal and acid, we then quickly put the burning splint into the boiling tube with the gas and heart a "Popping" like sound comes from the tube.

Discussion - For this experiment, we used Magnesium strips and Hydrochloric acid, it was really fun because we didn't expect the popping noise to be so loud. We figured out the longer we kept the metal, acid and boiling tube altogether and the stronger out solution was created an even bigger noise. It was really fun because at first we were all scared the test tubes would break but to our surprise it didn't.

Conclusion - This experiment was really fun to do as I had remembered we had done this in Year 9, it was a quick experiment but was still lots of fun because we wanted to see if we could create an even bigger pop, it worked well and was surprising  to hear. I would definitely do this experiment again.