If particles have enough chemical energy, they form a bond upon collision. O True O False

When a bond breaks, what is happening with the energy? A B Energy may be released or absorbed depending on the circumstances с Energy is neither released nor absorbed because energy can neither be created nor destroyed D Energy is released to the surroundings Energy is absorbed from the surroundings

Consider the following hypothetical reaction XY + Z → XZ + Y + 20 kJ What bond is being broken?  Breaking this bond requires energy/releases energy (circle one). What bond is being formed?  Forming this bond requires energy/releases energy (circle one). What is the sign for the change in enthalpy of this reaction? Based on the enthalpy, what relationship can you draw between the energy of the bonds breaking and the energy of bonds forming in this reaction? The energy needed to break an XY bond is 70 kJ. What is the energy produced when an XZ bond forms?

27.What is latent heat of condensation?      A.the amount of heat released when a certain mass of a substance changes from a gas to a liquid   B.the amount of heat that is released when a certain mass of a substance changes from a liquid to a gas     C.the amount of heat that is released when a certain volume of a substance changes from a liquid to a gas     D.the amount of energy required to raise the temperature of a certain mass of a liquid as it changes from a liquid to a gas

Which of the statements is true of the energies of the bonds that break and form in an exothermic reaction? a. The energy required to break the necessary bonds is greater than the energy released when the new bonds form. b. The energy required to break the necessary bonds is about the same as the energy released when the new bonds form. c.The energy required to break the necessary bonds is less than the energy released when the new bonds form.

6. Explain the direction in which heat energy will flow in the picture shown to the left.

does adding temperature to a chemical reaction favor the reaction endothermically?

The energy of an exothermic reaction is released into the environment O consumed in the reaction converted to another form absorbed by the reaction

Which of the following is true about the following system? CSNO3 (s) CSNO3 (aq) + heat the volume of the system will increase the amount of heat released by the solid is greater than the amount absorbed by the solution heat will be absorbed by the surroundings heat will be absorbed by the system

Which diagram shows the change in potential energy as two atoms approach each other and why does the potential energy change in the way shown? 2. to 1. PE PE PE r because 4. The atoms are moving toward each other against the repulsive force that exists between them. 5. The atoms are moving toward each other with the attractive force that exists between them. 6. The atoms initially attract each other, but repel upon becoming too close together. O 1 and 4 O 2 and 6 O 3 and 5 O 2 and 4 O 3 and 4 3.