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Which statement is true for most chemical reactions?

O An energy change occurs during the breaking and forming of bonds.
O The internal energy of the system increases during a reaction.
O Energy is released during the formation of reactants.
O The enthalpy of the products is higher than the enthalpy of the reactants

User Aleksandr Pilgun
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2 Answers

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10 votes

Answer:

An energy change occurs during the breaking and forming of bonds.

Step-by-step explanation:

Energy changes occur when bonds are broken or formed.

When a bond is formed, energy is released.

When a bond is broken, energy is stored.

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Thermochemical Reactions Quiz answer

User Spicydog
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15 votes
15 votes

Answer:

An energy change occurs during the breaking and forming of bonds.

Step-by-step explanation:

User Ironkeith
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