endothermic\na reaction in which energy is absorbed by matter\nexothermic\na reaction in which energy is…

endothermic\na reaction in which energy is absorbed by matter\nexothermic\na reaction in which energy is released by matter\n• endothermic reactions: reactants have ____________ energy than the products.\n• exothermic reactions: reactants have ____________ energy than the products.\nthink pair share & practice\n• in a laboratory, a student combines vinegar and baking soda into a beaker. the initial temperature is 28°c and the final temperature, 2 minutes later, is 20°c.\n what happened to the heat in the surroundings?\n did an endothermic or exothermic reaction occur?\n• is this energy diagram representing an endothermic or exothermic reactions? explain!\nnearpod quiz score: ____/5

endothermic\na reaction in which energy is absorbed by matter\nexothermic\na reaction in which energy is released by matter\n• endothermic reactions: reactants have ____________ energy than the products.\n• exothermic reactions: reactants have ____________ energy than the products.\nthink pair share & practice\n• in a laboratory, a student combines vinegar and baking soda into a beaker. the initial temperature is 28°c and the final temperature, 2 minutes later, is 20°c.\n what happened to the heat in the surroundings?\n did an endothermic or exothermic reaction occur?\n• is this energy diagram representing an endothermic or exothermic reactions? explain!\nnearpod quiz score: ____/5

Answer

Explanation:

Step1: Recall endothermic - exothermic definitions

Endothermic reactions absorb heat from surroundings, exothermic release heat to surroundings.

Step2: Analyze endothermic reaction energy

In endothermic reactions, reactants have less energy than products as energy is absorbed to form products.

Step3: Analyze exothermic reaction energy

In exothermic reactions, reactants have more energy than products as excess energy is released.

Step4: Analyze vinegar - baking soda reaction

The temperature decreased from 28°C to 20°C. This means the reaction absorbed heat from the surroundings.

Step5: Determine reaction type

Since heat was absorbed from the surroundings, it is an endothermic reaction.

Answer:

  • Endothermic Reactions: less
  • Exothermic Reactions: more
  • What happened to the heat in the surroundings: Heat was absorbed by the reaction from the surroundings.
  • Did an endothermic or exothermic reaction occur? Endothermic reaction occurred.
  • For the unspecified energy - diagram question: If the energy of products is higher than reactants, it is an endothermic reaction; if the energy of reactants is higher than products, it is an exothermic reaction.