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PLEASE HELP DUE AT 2PM I'M DESPERATE, WILL GIVE BRAINLEST!!
1. When magnesium is burned in air, its mass increases. Explain why this is.

2. When a match is burned in air, its mass decreases. Explain why this is.

3. This equation is unbalanced Na + F2 → NaF. Explain how you know it is unbalanced.

4. Why does it need to be balanced? Refer to the conservation of mass in your answer

5. A student heats up a metal and finds that its mass increases. The students says “this is because heat has been added.” Explain why this is incorrect.

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kasaksingh

Answer:

Ans no 1. As magnesium used to react with oxygen and due to the reaction the mass (weight) of magnesium increases , this reaction between oxygen and magnesium which form magnesium oxide in the air by forming white smoke increases the mass of magnesium

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