Font size
WorksheetsChem 112 Chapter 9 T/F
Total questions: 15
Worksheet time: 8mins
When a boulder rolls down a hill, its kinetic energy at the bottom is equal to its change in potential energy (assuming a frictionless surface).
True
False
When fuel is burned, the energy of the heat and light produced is equal to the difference in chemical potential energy between the products and reactants of the reaction.
True
False
Which of the following are true?
Energy is conserved, but can be transferred between different forms.
For exothermic reactions, (delta)H is always positive.
For endothermic reactions. (delta)H is always positive.
For endothermic reactions, heat can be treated as a product.
Which of the following are true?
i. If a beaker gets cold during a reaction, it means that the reaction was exothermic.
ii. If a beaker gets hot during a reaction, it means that the reaction was endothermic.
Only i. is true
Only ii. is true
Both i. and ii. are true
Neither i. nor ii. is true
Which of the following is false?
The change in enthalpy is the heat transferred to a system under constant pressure and assuming only expansion work.
The enthalpy of a compound can be determined in absolute terms.
The enthalpy of formation of a compound is defined relative to its elements in their standard state.
The enthalpy of formation of an element in its standard state is zero.
Which of the following is true?
The gas phase of a compound always has higher enthalpy than its liquid phase.
The solid phase of a compound always has higher enthalpy than its liquid phase.
The solid phase of a compound always has higher enthalpy than its gas phase.
Which of the following is true?
i. Heating a compound always increases its enthalpy.
ii. Temperature is a measure of motion at the atomic level.
i. only
ii. only
Both i. and ii.
Neither i. nor ii.
If two objects are put in thermal contact with each other, eventually they will come to a common temperature.
True
False
Which of the following is true?
i. The more places that heat can go (the more modes), the higher the compound's heat capacity.
ii. If two compounds absorb the same amount of heat, the one with the larger heat capacity will have a larger change in temperature.
i. only
ii. only
Both i. and ii.
Neither i. nor ii.
Which of the following is true?
All gas particles in a three dimensional container have three translational degrees of freedom.
All gas particles in a three dimensional container have three vibrational degrees of freedom.
All gas particles in a three dimensional container have three rotational degrees of freedom.
Which of the following are true?
Bond enthalpies are always positive
Lattice enthalpies are always positive
Enthalpies of formation are always positive
Solution enthalpies are always negative
Enthalpies of hydration are always negative
Which of the following is true?
i. Enthalpies of vaporization are always positive
ii. Enthalpies of fusion are always negative
i. only
ii. only
Both i. and ii.
Neither i. nor ii.
To use bond enthalpies to estimate the change in enthalpy of a reaction, all of the reactants and products have to be gases.
True
False
Which of the following is true?
i. The stronger the ion-dipole interaction, the larger the enthalpy of hydration.
ii. For ionic solids, the stronger the ion-ion interaction, the larger the lattice enthalpy.
i. only
ii. only
Both i. and ii.
Neither i. nor ii.
Do you actually like when I do these Quizizz?
No, I would rather you stick to the PowerPoints/practice problems.
No, I don't really like Quizizz, but it is nice to get away from the PowerPoints from time to time.
Yes, I think it's a nice change of pace during SI
Yes, but for a different reason that the other option that says yes.
I am indifferent.
