bond energy calculation Flashcards
1
Q
in an exothermic reaction, what happens?
A
energy is transferred from chemicals to the surrounding
2
Q
is an exothermic change positive or negative?
A
negative, because energy is transferred from chemicals
3
Q
in an endothermic reaction, what happens?
A
energy is gained from surroundings
4
Q
is an endothermic change positive or negative?
A
positive, because energy is gained
5
Q
when a chemical bond is broken, what type of energy is required?
A
endothermic energy
6
Q
making a bond requires what type of energy?
A
exothermic
7
Q
every chemical bond has an energy value, what does this tell us?
A
tell us the energy required to break that bond
