What is a pure substance?

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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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yumdrea

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.

yumdrea

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

Added 12/19/2017 12:34:16 AM

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25- 275=

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Question

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Updated 3/24/2014 8:50:20 AM

1 Answer/Comment

jeifunk

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?

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Question

Updated 11/21/2015 11:33:29 AM

3 Answers/Comments

yumdrea

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

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yumdrea

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

Added 11/21/2015 11:32:50 AM

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yumdrea

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

Added 11/21/2015 11:33:29 AM

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