Question 5

Question

A)Which statement is the best description of the energy found in molecules of water?(1 point)
Responses

A molecule's temperature is not connected to its energy.
A molecule's temperature is not connected to its energy.

Hotter molecules have more kinetic energy.
Hotter molecules have more kinetic energy.

Colder molecules have more kinetic energy.
Colder molecules have more kinetic energy.

Colder molecules have more thermal energy.
Colder molecules have more thermal energy.
Question 6
A)When potassium permanganate and glycerol react, the potential energy of the products is less than the potential energy of the reactants. Which statement about this reaction is correct?(1 point)
Responses

The activation energy of the system is negative.
The activation energy of the system is negative.

The reaction is endothermic.
The reaction is endothermic.

The reaction is exothermic.
The reaction is exothermic.

The total potential energy of the system is constant.

Answer 1

Question 5:

The best description of the energy found in molecules of water is:

Hotter molecules have more kinetic energy.

Hotter molecules move faster and possess more kinetic energy compared to colder molecules.

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Question 6:

The correct statement about the reaction between potassium permanganate and glycerol, where the potential energy of the products is less than that of the reactants, is:

The reaction is exothermic.

In an exothermic reaction, the products have lower potential energy than the reactants, releasing energy in the process.