Using the graphs, explain how the graphs are used to identify if the reaction is endothermic or exothermic, if heat was released or absorbed, and why the sign of enthalpy change was positive or negative. Each graph should have an explanation, thank you!

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

Which statement describes james chadwick’s discovery.

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?