Another question on Elements, Compounds & Mixtures that i have discussed with the students in my Intensive Revision Program. Thought it will be an interesting one for you to try it out.
Question:
The elements iron and sulfur combine to form the compound iron sulfide (FeS). List the differences between Iron Sulfide and a mixture of iron and sulfur. (Tips: You can present in a table format)
All the best to your Academic Success in Chemistry,
Sean
PS: Check “Comments” below for Suggested Answers.
What Is differance between ” Compounds & Mixtures ” ?
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sean Reply:
February 9th, 2009 at 3:09 pm
Hi Hamid,
Where are you from? and the level/schools you are in?
The way to answer your question above and get full marks from the examiners is to DEFINE the two terms directly, follow by stating their chemical/physical properties differences.
A Compound is a substance containing 2 or more elements chemically joined together whereas A Mixture consists of 2 or more substances (can be elements or compounds) that are not chemically joined together.
Major differences:
Pure Compound
1. Fixed % by Mass of each element
2. Has a fixed chemical formulae
3. Cannot be separated by physical means
4. Has a fixed MP and BP
It is the opposite (of the above 4 points) for A Mixture.
Hope the above discussion is useful to you.
Towards Your Academic Success in Chemistry,
Sean
Master Trainer
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