metal / chemical process / chemical components / chemical reactions / heat energy / External warming devices / chemical substances / chemical reaction processes / thermal energy / chemical reaction / chemical reaction system / chemical properties / chemical species / thermal energy transfer / chemical system / bond energy / chemical property leads / energy change / chemical processes / uniform energy distribution / energy / /
Sub-Zero — High School Sample Classroom Assessment Introduction Chemical reactions can be described as endothermic or exothermic depending on whether energy is used or given off during a reaction. Practically, these ty