Heat

Question 1

How is the temperature of a substance related to the kinetic energy of its molecules? Select all that apply.

Revolt · Accepted Answer

As the kinetic energy of molecules increases, the temperature increases.; Temperature is a measure of the average kinetic energy of molecules in the substance.

Question 2

If an ice cube were placed on the hot radiator, how would most of the kinetic energy be transferred?

Revolt · Accepted Answer

from the radiator to the ice cube

Question 3

Consider an ice cube and a hot radiator. Which has the higher thermal energy?

Revolt · Accepted Answer

the radiator

Question 4

Which statements about the reaction are true? Select all that apply.

Revolt · Accepted Answer

The reaction is exothermic; The equation shows that 891 kJ of energy are released as a product.; The graph shows that the reactants have greater potential energy than the products.

Question 5

Which chemical or physical change is an endothermic process?

Revolt · Accepted Answer

the melting of an ice cube

Question 6

How is the temperature of a substance related to the kinetic energy of its molecules? Select all that apply.

Revolt · Accepted Answer

As the kinetic energy of molecules increases, the temperature increases.; Temperature is a measure of the average kinetic energy of molecules in the substance.

Question 7

Which chemical or physical change is an exothermic process?

Revolt · Accepted Answer

the combustion of gasoline

Heat Answers

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