Physical Properties Of Compounds And Their Respective Elements

Use appropriate resources, like the Handbok of Chemistry and Physics (CRC) and the Merck Index, too look up properties.

Name Of Substance	Component Elements	Observable Physical Properties	Density	Melting Point
1. copper
2. oxygen
3. copper (I) oxide	[1 & 2]
4. copper (II) oxide	[1 & 2]
5. lead
6. iodine
7. lead (II) iodide	[5 & 6]
8. sulfur
9. lead (II) sulfide	[5 & 8]
10. zinc
11. zinc sulfide	[8 & 10]
12. manganese
13. chlorine
14. manganese (II) chloride	[12 & 13]
15. hydrogen
16. carbon
17. sugar	[12,15,16]
18. water H20	[2,15]

  

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C₁₂H₂₂0₁₁

___________________________ ______ __________

Questions

A. What evidence do you have that #3, 4, 7, 9, 11, 14, 17, and 18 are compounds and not mixtures? Please be specific in your explanation.

 

 

 

 

 

 

 

 

B. If you had a mixture of iron and sulfur, what would be a good way to separate these?

 

 

 

 

 

 

 

 

C. Why do you think they call sugars like sucrose (C₁₂H₂₂O₁₁) carbohydrates?

 

 

 

 

 

 

 

 

D. Is the melting point of the compound close in value to the melting point of the elements that make up that compound?

 

 

 

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Editor's Notes:
This activity was sent to me with no directions or attachements. It seems that the instructor will need to provide samples of the substances as well as reference books.

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Questions? Comments??

Revised on: 09/15/2003 at 15:28:05