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MATTER & CHANGE COURSE
Prelaboratory 2

Instructions:
Your investigation is individual and written on a computer. The practice is in this same document and is mandatory in order to enter thelaboratory along with your long-sleeved lab coat (white/cotton), credential and closed shoes.
At the end of your research include the consulted bibliography. 

Answer the following questions:

1.What is the definition of salts? What reaction do salts come from? How are salts composed?

It’s a compound substance known as sodium chloride (NaCl), its use as a condiment, a preservative ofanimal food, and in various industrial processes. Salts are composed of metallic ions and nonmetallic ions.

2. What is the flame test?

Is use to visually determine the identity of an unknownmetal or metalloid ion based on the characteristics color the salt turns the flame of a Bunsen burner.

3. Make a schematic drawing to illustrate the zones of the flame produced by a Bunsen burner.4. Investigate the flame color for the following cations:

|Cation |Color of the flame |
|Sodium |Yellow|
|Potassium |Violet |
|Calcium |Yellow-Red|
|Strontium |Scarlet or Crimson |
|Zinc |White-Green|
|Copper |Emerald |
|Lithium |Carmine to Magenta|
|Barium |Yellow-Green |

5. What are the periodic properties of elements?

Atomic Radius:...
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