Question

when a magnesium ribbon is burnt in air,what are the two observation that you make

Answer 1

Answer:

When it is burnt in air the following observations can be seen:-

1) Emission of UV rays which is harmful for human eyes.

2) Emission of a large amount of heat.

3) Magnesium oxide as the product of this reaction.

4) Produces white light while burning.

Mg+O2=2MgO+Heat

Answer 2

The magnesium ribbon is heated in the air, and these are the two things you see:

• When a magnesium ribbon is heated in the air, it combines with oxygen to form a white powder of magnesium oxide MgO and release heat and light.
• Make a white powder of magnesium oxide powder.
• Magnesium contributes two electrons to oxygen atoms to form this powder product.
• 2Mg + O2⟶ 2MgO.
• Oxygen and magnesium combine in chemical reactions to form this element.
• After heating, make a white powder of magnesium oxide powder.
• Magnesium contributes two electrons to oxygen atoms to form this powder product.
• This is an exothermic reaction and a combined reaction.
• It burns white light.
• Magnesium oxide forms, as magnesium interacts with oxygen.
• Magnesium weight will increase by one-third.