Correct: Chemical reactions can be either exothermic or endothermic reaction. , Exothermic reaction is a chemical reaction that releases heat into the surroundings. , Endothermic reaction is a chemical reaction theat absorbs heat from the surrounding. , Adding sodium hydroxide and water is an example of exothermic reaction. , Mixing hydrochloric acid and sodium hydrogen carbonate is an example of endothermic reaction. , Fireworks display is an example of exothermic reaction., a decrease in thermometer reading in an indicator of endothermic reaction., Incorrect: A chemical reaction can be a physical change or process. , An increase in thermometer reading is an indicator of endothermic reaction. , The oxidation process in an example of endothermic reaction. , Mixing ammonium chloride with water will release heat. , Neutralization is not a chemical reaction. ,

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