A student adds a small amount of ammonium chloride to a beaker of water. The temperature of water decreased from 21oC to 17oC. Which type of reaction has occurred and why? Question 3AnswerA.Endothermic reaction because heat is absorbed. B.Exothermic reaction because heat is released.C.Exothermic reaction because heat is absorbed.D.Endothermic reaction because heat is released.

When ammonium nitrate is added to water, an endothermic reaction occurs and ________________________.Question 8AnswerA.nothing changes.B.the temperature rises.C.heat is given out.D.the temperature of the reaction mixture falls.

Label each of the following as being an example of an endothermic or an exothermic reaction.a. a reaction where the surroundings decrease in temperature from 25 oC to 19 oC  Blank 1 Question 26b. N2(g)  +  3 H2(g)  -->  2 NH3(g)    ΔH = -92.4 kJ

. A reaction is allowed to take place in an insulated container containing 100 mL of water. If the reaction is endothermic, what happens to the temperature of water?*2 pointsThe temperature of water goes down.The temperature of water goes up.The temperature of water does not change.

An insulated calorimeter contains 100 g of water at 22 °C. A chemical reaction causes the temperature to increase by 6 °C. Is the heat of reaction for this process endothermic or exothermic? Group of answer choicesexothernmicendothermic

When an exothermic reaction takes place, the reaction mixture gives out heat because _______________________.Question 5AnswerA.more energy is released when new bonds are formed than is taken in when existing bonds in the reactants are broken.B.the radiation energy produced by the reaction has to be got rid of via diffusion.C.in an exothermic change, the products are less stable than the reactants.D.energy is always absorbed in a chemical change which makes new substances.Clear my choiceQuestion 6Not yet answeredMarked out of 2.00Flag questionTipsQuestion textIn an exothermic reaction__________________________.Question 6AnswerA.energy is released to the surroundings and the temperature of the surroundings increases.B.energy is absorbed from the surroundings and the temperature increases.C.energy is released to the surroundings and the temperature of the surroundings decreases.D.energy is absorbed from the surroundings and the temperature of the surroundings decreases.