Whenever chemical bonds are broken, energy is . whenever chemical bonds form, energy is?

How much energy is made when a pice of wood burns. how do you know

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal