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Showing posts with label science. Show all posts
Showing posts with label science. Show all posts

Thursday, May 20, 2021

Diffrent types of gas experiments

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.

Wednesday, February 19, 2020

Science

Testing for simple sugars - the Benedict's Test (Test Number 2)

Aim:To test a sample of food to determine whether it contains simple sugars. Testing foods simple complex protein.

Equipment: Bunsen Burner, Test Tube Tong, Benedict's Solutions, A Sample Of Food.

Method:

Milk is not complex.

Protein:
Potato: neg
Apple: neg
Milk: Positive
Egg: Positive
Bread; Neg
Sugar: Neg

Complex Sugar
Simple Sugar

So my conclusion is. I am so surprised that potato didn't have protein. Because obviously milk and egg have protein in it.