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Questions in Periodic Table tagged with "Periodic Table"

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  What 4 atoms do protein molecules always contain? What other atoms might they contain?

  Posted by enotechris on Dec 2, 2009 at 07:56 PM

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  How do protons react with the main atom?

  Posted by joemama on Nov 19, 2009 at 07:49 AM

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  What is tripple distilled mercury used for and where?

  Posted by nkobi on Nov 17, 2009 at 12:41 AM

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  Describe the development of the modern periodic table. Include contribution made by Lavoisier, Newlands, Mendeleev, and Moseley.

  Posted by amazona0125 on Nov 16, 2009 at 12:26 AM

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  Why do you think mercury is a metal and bromine a non-metal?

  Posted by peshol on May 24, 2009 at 08:54 AM

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  What are the chemical and physical properties of xenon, and the history regarding the discovery?

  Posted by jahnea on Mar 30, 2009 at 04:07 PM

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  What are the group names of the periodic table? What are their traits?

  Posted by blueeyeidy on Mar 17, 2009 at 04:07 PM

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  What are the everyday uses of Hydrogen?

  Posted by tylerrxo on Mar 15, 2009 at 11:42 PM

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  Why are Group 1 metals so reactive and what are they called?

  Posted by mike01va on Jan 22, 2009 at 10:19 PM

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  At what temperatures is lithium a solid, a liquid, or a gas?(in metric units only please) 

  Posted by bobfred on Jan 21, 2009 at 05:13 PM

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  What are isotopes? Please explain clearly and in detail.

  Posted by dardasa on Jan 17, 2009 at 03:41 PM

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  The elements in the Periodic Table are arranged from left to right and top bottom based upon what value?

  Posted by alexisjf on Jan 10, 2009 at 09:51 AM

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  If you lower the temperature enough, can all the elements be turned into solids?

  Posted by enotechris on Dec 21, 2008 at 06:45 PM

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  Can all the elements, remaining as elements, turn into solids? Why or why not?

  Posted by enotechris on Dec 17, 2008 at 06:10 PM

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  What 5 elements are liquid on a hot summer day (38 C)?

  Posted by enotechris on Dec 16, 2008 at 04:50 PM

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  Why are the elements Bromine and Mercury liquid at room temperature?

  Posted by leydibug on Dec 16, 2008 at 09:42 AM

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  Why does the element Iron have a variable valency, sometimes Fe+2 and sometimes Fe+3?

  Posted by faro62 on Dec 13, 2008 at 01:19 PM

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  Compare the properties of hardness, melting point, and density among the alkali metals, alkaline earth metals, transition metals, and non-metals.

  Posted by fulla on Dec 9, 2008 at 02:50 PM

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  Why do magnesium, phosphorus, and zinc exhibit slightly higher first ionization energies than the general trend within each of their periods?

  Posted by mjoyner on Dec 7, 2008 at 06:18 PM

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  What is another term for an unreactive element? The letters scrambled up are: ngora.

  Posted by mjoyner on Nov 30, 2008 at 01:14 PM