If the temperature changes in a chemical reaction, what has occured?
a)energy was destroyed
b)energy was created
c)there was no energy transfer
d)energy was transferred

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.