1) Does exothermic mean that energy is taken in to the system or released to the surroundings?  a) Taken in to the system b) Released to the surroundings 2) What is the opposite of exothermic? a) enthalpy b) enthraperthic c) endoskeleton d) endinious e) endothermic f) poilikothermic 3) Citric acid and sodium hydrogencarbonate react together (temperature decreases) Is it exothermic or endothermic? a) Endothermic b) Exothermic 4) Any combustion (burning in oxygen) reaction. Is it exothermic or endothermic? a) Exothermic b) Endothermic 5) What word means "the chemicals that are used up in the reaction"? a) Products b) Reactants c) Molecule d) Elements e) Ingredients f) Acids 6) What word means "the chemicals that are made in the reaction"? a) Products b) Reactants c) Molecules d) Elements e) Ingredients f) Acids 7) Is this reaction exothermic or endothermic? a) Exothermic b) Endothermic 8) Is this reaction exothermic or endothermic? a) Exothermic b) Endothermic 9) Is this reaction exothermic or endothermic? a) Exothermic b) Endothermic

Exothermic and Endothermic Reactions

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