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How is heat different from temperature?

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Question

How is heat different from temperature?

a. Heat is the measure of particle agitation inside the object; temperature is the flow of thermal energy.

b. Temperature is the flow of thermal energy; heat refers to the average speed of particles in an object.

c. Heat is the flow of thermal energy; temperature refers to the average speed of particles in an object.

d. These are different names for the same measure of thermal energy.

 
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How is an isotope different from an ion?

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Question

How is an isotope different from an ion?

a. An ion is an atom that has lost or gained one or more neutrons. Isotopes are atoms that have the same number of neutrons but a different number of electrons.

b. An ion is an atom that has lost or gained one or more protons. Isotopes are atoms that have the same number of protons but a different number of neutrons.

c. An ion is an atom that has lost or gained one or more electrons. Isotopes are atoms that have the same number of protons but a different number of neutrons.

d. An ion is an atom that has lost or gained one or more electrons. Isotopes are atoms that have different numbers of protons.

 
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An electron

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Question

An electron in a boron atom makes a transition from the fifth excited state to the third excited state. Does the atom become ionized as a result?

a. Yes, the atom becomes ionized because due to the electron transition some electrons were lost.

b. Yes, the atom becomes ionized because due to the electron transition some protons were lost.

c. No, the atom does not become ionized because due to the electron transition only neutrons were lost.

d. No, the atom does not become ionized because no electrons were lost. Only an electron transition took place.

 
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radioactive dating methods

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Question

Regarding radioactive dating methods, what are the three requirements that must be met for an accurate age to be determined? Which of the three requirements is problematic and why?

 
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