Question

write a chemical equation when magnesium is burnt in air to give magnesium oxide.​

Answer 1

Answer:

2Mg + O2 ---> 2MgO

Explanation:

2Mg + O2 ---> 2MgO

2 moles of mg for balancing

Answer 2

Answer:

The balanced chemical reaction of magnesium burnt in oxygen to give magnesium oxide.

2Mg + O2 => 2MgO

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The types of chemical reactions are:-

• Combination
• Decomposition
• Redox
• Single displacement
• Double displacement

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Some observations which helps to determine whether a chemical reaction has taken place or not:-

• Formation of precipitate
• Change in colour
• Change in state
• Change in temperature
• Evolution of a gas

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