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- Posts: 69
- Joined: Fri Sep 28, 2018 12:25 am
Why are the bond energy signs all negative? They're all attractive forces that result from subtraction but I don't get why they're results of subtraction and why they're negative.
- Posts: 68
- Joined: Fri Sep 28, 2018 12:26 am
Because energy is released when a bond forms. Since energy is leaving the system, the sign is negative.
- Posts: 29
- Joined: Fri Feb 02, 2018 3:02 am
Yes I agree. Energy is released to break bonds, so it is positive. It is leaving the system. Energy is needed to make bonds, so it is negative. It is using up energy around to break it.
Xingzheng Sun 2K
- Posts: 62
- Joined: Fri Sep 28, 2018 12:29 am
Energy is needed to break a bond and is released to form a bond. You also can understand by looking at the energy equation which starts with a negative sign.
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