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Write the formula for the compound magnesium oxide

Experiment to Determining the Empirical Formula of Magnesium Oxide In this experiment we will be using a piece of apparatus known as a crucible. A crucible is ceramic vessel with a lid used to hold substances that are heated to high temperatures. A crucible is preferable to using a glass test tube in this experiment because: Slide a Bunsen Burner on a blue flame not a smokey yellow flame under the crucible so that the hottest part of the flame the top of the inner blue cone is directly heating the bottom of the crucible.

Heat for 5 minutes to burn off any contaminants that may be present.

How do you write the formula for magnesium oxide?

The bottom of the crucible should glow red-hot for about 20 seconds. This is known as heating to incandescence. Slide the Bunsen Burner, still on a blue flame, out from under the crucible before turning it off.

This should ensure that no soot attaches to the bottom of the crucible. Use tongs to re-position the lid so that it covers the open crucible.

  1. Ionic compounds are formed as the result of the formation of positive and negative ions. Because of its high melting point, magnesium oxide finds many uses which apply its refractory properties, so it can be used as a furnace lining and in crucibles.
  2. Simon Cotton Many British people thinking back to their schooldays will remember seeing the burning of magnesium ribbon, possibly even doing the experiment themselves.
  3. Electrons are actually transferred from one atom to another to form rare gas electron structures for each ion.
  4. Weigh the clean, empty crucible and lid and record its mass. Weigh the crucible, lid and magnesium remember not to handle the crucible with your hands, use tongs.

Cool the clean, empty crucible and lid to room temperature without removing it from the pipe clay triangle. DO NOT touch the crucible, if it is hot you will be burnt, even if it is cool you will be adding contaminants from your hands!

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Remove the crucible from the pipe clay triangle using tongs to prevent contaminants from your hands being transferred to the crucible. If you have to walk with the crucible to the balance, hold the crucible in the tongs and support it with a heat resistant mat under it to take it to the balance for weighing.

Use tongs to transfer the crucible to the balance. Weigh the clean, empty crucible and lid and record its mass.

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Safety Wear safety goggles eye protection. Do not place anything near the open flame. Keep your pens, notebooks, etc away from the flame Do not breathe in any fumes coming out of the crucible. Assume that anything that is being heated or has been heated is hot. Do not touch these items without first trying to feel for heat being radiated off them without touching them. DO NOT look directly into the crucible while it is being heated!

DO NOT place anything hot directly onto the lab bench, always place hot objects on a heat resistant mat. DO NOT place anything hot on a balance! Producing the magnesium oxide. Clean a 35 mm strip of magnesium about 0.

Theory Behind the Experimental Determination of the Empirical Formula of Magnesium Oxide

Wind the magnesium strip around a clean glass stirring rod to obtain a loose coil and place this inside the crucible and place the lid on the crucible. Weigh the crucible, lid and magnesium remember not to handle the crucible with your hands, use tongs.

Light the Bunsen Burner, and obtain a blue flame, and use this flame to brush the bottom of the crucible for about 1 minute until the magnesium starts to burn as evidenced by a bright glow within the crucible, then place the Bunsen Burner under the crucible and heat strongly until all the magnesium turns into a grey-white powder about 10 minutes.

While still on a blue flame, slide the Bunsen Burner out from under the crucible before turning it off to prevent soot attaching to the crucible.

Empirical Formula of Magnesium Oxide by Experiment Chemistry Tutorial

Allow the crucible to cool to room temperature while still on the pipe clay triangle. Weigh the crucible, lid and contents.

  • It is also used for fireproofing boarding for panelling walls;
  • Why does magnesium nitride have subscripts in the formulas?

Remove the Bunsen Burner, and allow the crucible to cool back to room temperature, then weigh the crucible and lid again. Continue this heating, cooling and weighing process until you achieve a constant mass.