Chemistry Question – Element, Compounds & Mixtures

12 Mar

Posted by: sean in: Chemistry Notes & Tips

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 sulphur combine to form the compound iron sulphide (FeS). List the differences between Iron Sulphide and a mixture of iron and sulphur. (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's Next?

Digg it

Stumble it

Twitter it

2 Responses

Hamid Jam
15|Jan|2009 1

What Is differance between ” Compounds & Mixtures ” ?

Reply
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
Author

Reply