Lab 7.3 Reactivity of Metals.

Lab Questions. 


Do Elements that are in the same Period or those that are in the same Group have more similiraties in their properties ? 

Elements that are in the same Group have more similiraties in their properties, because of their valence electrons and also during the lab i made some observation of the element that were in the same Group. K & Na are from Group 1 on the periodic table during the lab i observed 5 similarities between them.

• Float in water.
• Exothermic reaction.
• Reaction with water is fast.
• Produce gas.
• Reaction with air is fast.

thats how i concluded that elements that are in the same Group have more similarities than elements that are in the same Period.

Elements in the same group tend to have very similar properties because they have the same valence electron for example in Group 2 Be electron configuration is 2-2, Mg electron configuration is 2-8-2 they both have the same valence electron which is 2.  I grouped K & Na because they valence electron is 1 and during the experiment i made similar observation about both of them which means they must have similar properties.

When an aton of sodium atom interacts with an aton of a nonmetal it will.

• Loses electrons
• Be a positive ion 
• The charge will be +1
• It will become like the noble gas Neon
• More stable.

Enrichment:

When you mix NaCl and Cacl, it produces 99% of pure sodium metal, which is what chemists use as pure Sodium. Obviously you need to have the right amounts in order to do so.