Physical Science Chapter 21

19 Questions  I  By Julierass311
Physical. Science.  .?

  
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1.  Light can only be seen through very thin metal. 
A.
B.
2.  Generally, MOs are low in energy because their electrons will be found between two nuclei.
A.
B.
3.  Compositions of alloys are generally fixed in simple rations. 
A.
B.
4.  For an alloy to form, the atoms must be different sizes. 
A.
B.
5.  Often alloys are better conductors than either of the metals, in their pure form, that make up an alloy. 
A.
B.
6.  Semi-metals are electrically conductive and have high melting points. 
A.
B.
7.  Semi- conductors and metals are very similar in the way each forms alloys. 
A.
B.
8.  Metal-metal compound
9.  Electrons act like a lubricant between layers of nuclei
10.  Movement of electrons 
11.  An electron which is not focused around any one nucleus
12.  Property of obsorbing photons throughout the electromagnetic spectrum. 
13.  Substances that conduct electricity better than insulators but not as good as conductors. 
14.  The degree to which a substance conducts heat. 
15.  A measure for current flowing through a semiconductor 
16.  Neclei surrounded by a sea of electrons 
17.  How easily light bounces off a surface of a substance
18.  Why are alloys not useful to us today?
A.
B.
C.
D.
19.  How do metals and semiconductors change with increasing temperature?
A.
B.
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