Exothermic and Endothermic Reactions
Chemistry ⇒ Chemical Reactions and Equations
Exothermic and Endothermic Reactions starts at 8 and continues till grade 12.
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See sample questions for grade 10
A chemical cold pack contains ammonium nitrate and water. When activated, the pack becomes cold. What type of reaction is occurring?
A student mixes barium hydroxide and ammonium chloride and observes the beaker becomes very cold. Is this reaction exothermic or endothermic?
A student observes that when hydrochloric acid is added to zinc, the test tube becomes warm. What type of reaction is this?
Calculate the enthalpy change (ΔH) for a reaction if the energy of reactants is 200 kJ and the energy of products is 150 kJ. State whether the reaction is exothermic or endothermic.
Describe the energy profile diagram of an exothermic reaction.
Describe what happens to the temperature of the surroundings during an exothermic reaction.
Explain the difference between exothermic and endothermic reactions in terms of energy changes.
Explain why melting of ice is considered an endothermic process.
Explain why the reaction between hydrochloric acid and sodium hydroxide is considered exothermic.
Is the process of dissolving sodium hydroxide (NaOH) in water exothermic or endothermic?
Is the reaction of quicklime (CaO) with water to form slaked lime (Ca(OH)₂) exothermic or endothermic?
