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What is a pure substance?
Question
Asked 5/6/2009 9:54:34 PM
Updated 12/19/2017 12:34:16 AM
2 Answers/Comments
Edited by yumdrea [12/19/2017 12:32:49 AM], Flagged by yumdrea [12/19/2017 12:32:52 AM]
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User: What is a pure substance?

User: What does heterogeneous mean?

Question
Asked 5/6/2009 9:54:34 PM
Updated 12/19/2017 12:34:16 AM
2 Answers/Comments
Edited by yumdrea [12/19/2017 12:32:49 AM], Flagged by yumdrea [12/19/2017 12:32:52 AM]
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8

A pure substance is a sample of matter with both definite and constant composition with distinct chemical properties.

Added 12/19/2017 12:33:04 AM
This answer has been confirmed as correct and helpful.
8

Heterogeneous means: consisting of elements that are not of the same kind or nature.


Added 12/19/2017 12:34:16 AM
This answer has been confirmed as correct and helpful.
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25- 275=
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Updated 3/24/2014 8:50:20 AM
1 Answer/Comment
25- 275= -250.
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What is a reactant? User: What is a product? User: What is the law of conservation of mass?
Question
Updated 11/21/2015 11:33:29 AM
3 Answers/Comments


The Law of Conservation of Mass is a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system.

Added 11/21/2015 11:28:42 AM
This answer has been confirmed as correct and helpful.

Product is something produced by human or mechanical effort or by a natural process.

Added 11/21/2015 11:32:50 AM
This answer has been confirmed as correct and helpful.

A reactant is a substance that changes in a chemical reaction.

Added 11/21/2015 11:33:29 AM
This answer has been confirmed as correct and helpful.
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