Testing for Hydrogen Gas
Metal + Acid = metal salt + hydrogen
Magnesium + Sulfuric Acid = magnesium sulfate + hydrogen
Equipment: A test tube, a boiling tube, bunsen burner, wooden splint, a bottle of acid, a piece of metal, safety glasses.
Method:
Light a bunsen burner
Add your sample of metal to your test tube add sml of acid
carefully invert the boiling tube above the test tube containing the metal and acid ( as shown in the diagram below)
Hold the test tube together for a few minutes allowing time for the inverted boiling tube fill with gas
When you think the tube is full, your lab partner should light a wooden splint.
Carefully , but quickly, titl the boiling tube full of gas upwards and insert the burning splint into the mouth of the test tube
Conclusion :When we light the wooden splint with fire and put in the mouth of the tube it made a sound a popping sound
Metal + acid = Metal Salt + Hydrogen (Poptest)
Metal + Oxygen = Metal Oxide
Metal Oxide + Hydrogen Peroxide = Metal Hydroxide + Oxygen ( Glowing Splint)
Making a Metal Oxide
Aim: To make a metal oxide and observe the different in properties of the product compared to the reactants
Equipment:A piece of magnesium, Bunsen burner, safety glasses, metal scissor tog
Method :
Light the bunsen burner
hold the piece of magnesium in the scissor tongs. Ensure you are holding onto the very tip of the magnesium.
place the other end of the magnesium into the bunsen flame(at the top of the blue flame)
when the magnesium begins to burn, do not look directly at it, as the light emitted can permanently damage your eyes
Conclusion : When we light up the magnesium we had to look away because the light was to bright your eyes might get infected
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:
- Light your bunsen burner
- Add a pea - sized amount of the metal carbonate into one of the boiling tubes
- Place this boiling tube into a test tube rack. Ensure you have the bung and delivery tube ready
- Add 5 ml 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, your lab partner should light a wooden splint
- Carefully remove the boiling tube for under the delivery tube taking care to keep it facing upright
- Insert the burning splint into the mouth of the test tube
Conclusion :
As soon as we put the half of the tube the the lime juice it bubbled up and the lime juice kinda went cloudy.