I'm going to have to say A. My reason to that is because when you leave a cup of hot cocoa (assuming its hot), it gives off the heat (exothermic) the
<span>In physics, the law of conservation of energy states that the total energy of an isolated system remains constant—it is said to be conserved over time. Energy can neither be created nor destroyed; rather, it transforms from one form to another.</span>
What cause the heat we feel on a hot, sunny day is UV Rays my mans
Sodium- Na
most active element- Fluorine
lightest element- Hydrogen
Radioactive is the most penetrating nuclear radiation