Question

*1. The internal energy with a system associated with the motion of particles and that can be added to a substance is called_____.


A. Thermal energy


B. Electrostatic forces


C. Temperature


D. Kinetic energy


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*2. Which statement describes the effect of adding more energy to a system, assuming a phase change does not occur?


A. The particles within the system will have greater motion, and the temperature will decrease.


B. The particles within the system will have greater motion, and the temperature will increase.


C. The particles within the system will have less motion, and the temperature will increase.


D. The particles within the system will have less motion, and the temperature will decrease.


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*3. Which statement correctly describes how attractions that hold particles break?


A. Attractions due to electrostatic forces. When particles have low enough energy, these forces can no longer keep particles together.


B. Attractions due to gravitational forces. When particles have low enough energy, these forces can no longer keep particles together.


C. Attractions due to gravitational forces. When particles move fast enough, these forces can no longer keep particles together.


D. Attractions due to electrostatic forces. When particles move fast enough, these forces can no longer keep particles together.


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*4. Which statement explains why a rubber band analogy is not a perfect comparison for bonds in a substance when considering phase changes?


A. For a phase change from liquid to gas, the bonds break completely and particles can move independently of each other.


B. For a phase change from liquid to gas, the bonds do not break completely and the particles can still slide past each other.


C. For a phase change from solid to liquid, the bonds break completely and particles can move independently of each other.


D. For a phase change from solid to liquid, the bonds do not break completely in the particles can still slide past each other.


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*5. The boiling point of benzene is 80°C. Which pair of samples will have the same average kinetic energy as benzene molecules?


A. Two samples of liquid benzene, one at 70°C in the other at 80°C.


B. A sample of liquid benzene at 70°C and a sample of gaseous benzene at 90°C.


C. Two samples of gaseous benzene, one at 80°C in the other at 90°C.


D. A sample of liquid benzene at 80°C and a sample of gaseous benzene at 80°C.

Answer 1

Answer:

1. A/Thermal Energy

2. B/The particles within the system will have greater motion, and the temperature will increase.

3. C/Attractions occur due to electrostatic forces. When particles move fast enough, these forces can no longer keep particles together.

4. D/ For a phase change from solid to liquid, the bonds do not break completely and particles can still slide past each other.

5. D/ a sample of liquid benzene at 80ºC and a sample of gaseous benzene at 80ºC

Explanation:

I took the Test.

Answer 2

1. Internal energy associated with systems and particles is thermal energy. Thus, option A is correct.

The internal energy has been described as the energy that has been assessed by the molecules and bonds at the STP. Thermal energy has been the energy of particular molecules and the system comprising all the molecules have the summation of the thermal energy.

Thus, internal energy associated with systems and particles is thermal energy. Thus, option A is correct.

2. The addition of energy results in greater motion with an increase in temperature has been representation no phase change. Thus, option B is correct.

The addition of energy to the substance results in the increased motion of the particles. The energy higher than the threshold energy has been responsible for the phase change of the substance.

The addition of energy results in greater motion with an increase in temperature has been representation no phase change. Thus, option B is correct.

3. The movement of the particles under the gravitational attraction is not enough to hold the particles together at a longer distance. Thus, option B is correct.

The attraction has been the force that has been responsible for holding the particles in a molecule. Different attractions have a different levels of stability and strength.

The movement of the particles under the gravitational attraction is not enough to hold the particles together at a longer distance. Thus, option B is correct.

4. The phase change of the molecules has been mediated by overcoming the force of attraction that allows the molecules to move freely. The solid to liquid phase change has been mediated with the breaking of the attraction between the bonds allowing free movement.

Thus, statement 4 is incorrect, and option D is correct.

5. The kinetic energy has been the energy possessed by the moving molecules in the medium. The molecules in liquid and gas have been possessing the same energy at the same temperature, Thus, option D is correct.

For more information about energy and electrostatic interactions, refer to the link:

https://brainly.com/question/6170401