sign conventions ...positive or negative ??

Question

im always confuse in the sign conveNtions...of..:

1) energy release by the system
2) enegy used by the system
3) work done by the system
4) work done on the system
5) work done against the system
6) work done in the system

MAIN QUESTION ARE THE CONVENTIONS DIFFERENT FOR PHYSICS AND CHEMISTRY..............

TELL THE CONVENTIONS FOR BOTH PHYSICS AND CHEMISTRY !!!!!!!!!!!

THANKING U.

Answer 1

PHYSICS

work done by the system is negative
work done on the system is positive

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CHEMISTRY

work done by the system is POSITIVE
work done on the system is NEGATIVE

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hope its th best answer//..
all the best

Answer 2

i wil tell u about chemistry and the reverse happens in physics first consider the process in a reaction form and always put the energy on the right hand side like if energy is released then if we have to write it on the right side then it must be positive

Answer 3

Energy going in is positive, energy coming out is negative. Exotherms and binding energies are negative.

Answer 4

1) -ve
2) +ve
3) +ve
4) -ve
5) +ve
6) 0