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A candle slowly burns until the last bit of wax and wick are gone.
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A candle slowly burns until the last bit of wax and wick are gone.

User John Smart
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Answer:

1) B. The change in energy in a system during an exothermir reaction

2) B. In the air, only the oxygen is part of the system

3) B. The energy found in the reactants....

4) D. This is an endothermic reaction because the system took energy from the surroundings.

5) B. Energy is released by the formation of chemical bonds

Step-by-step explanation:

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