When an atom emits radiation
A) an electron moves in precisely one complete orbit around the nucleus.
B) a photon makes a quantum jump from one quantum state to another.
C) an electron makes a quantum jump from one quantum state to another.
D) a proton strikes a neutron to create a photon.
E) it emits a small portion of its electric charge.
C
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Wrought iron is
(a) Heated and then rapidly quenched into water (b) Packed in carbon to harden the iron (c) Heated in carbon monoxide (d) Deformed into shape
An 8000 kg satellite is launched from the surface of the earth, and injected into outer space a long distance from the earth. The kinetic energy needed to launch the satellite into outer space is 
A. 
B. 
C. 
D. 
E. 
The balance between electrical and nuclear strong forces is more tenuous in
A) light elements. B) middle size elements like iron. C) heavier elements. D) all of the above E) none of the above
The best electrically conducting elements are located ________ in the periodic table.
A. in the last two columns B. on the left side or in the transition regions C. in the middle columns D. in the first two rows E. randomly