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cluponka [151]
3 years ago
13

PLEASE HELP NEED HELP ASAP Which of the answers correctly completes the following statement? __________ chemical bonds requires

energy and ___________ chemical bonds releases energy.
forming; breaking



breaking; breaking



forming; forming



breaking; forming



none of the above
Chemistry
1 answer:
dimaraw [331]3 years ago
7 0
<h3>Answer:</h3>

              <u>Breaking</u> chemical bonds requires energy and <u>forming</u> chemical bonds releases energy.

<h3>Explanation:</h3>

                        Bond Breaking is an endothermic reaction and requires energy. This energy provided to break the bond is called as bond energy. Hence, this is a non spontaneous reaction as it doesn't takes place on its own but requires energy to break them into smaller fragments.

                        While, Bond Forming is an exothermic reaction. When two substances come close together the formation of bond results in the release of energy. As the resulting product is stable hence, it will be lower in energy as compared to the sum of energies of the reactants. Therefore, the surplus energy is released in the form of heat.

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Answer:

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Balanced chemical equation:

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The balanced equation s given above and it completely follow the law of conservation of mass.

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

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Steps to balanced the equation:

Step 1:

Mg + O₂  →  MgO

Mg = 1         Mg = 1

O = 2           O = 1

Step 2:

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O = 2           O = 1

Step 3:

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O = 2           O = 2

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