Difference between mixtures and compounds

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Discussion Overview

The discussion revolves around the distinction between mixtures and compounds, focusing on how to identify them theoretically, particularly in the context of exam questions. Participants explore the definitions, characteristics, and examples of each type of substance.

Discussion Character

  • Conceptual clarification
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant states that mixtures consist of two or more substances that are not chemically bonded, while compounds are chemically bonded.
  • Another participant questions how to identify a substance as a mixture or compound in a theoretical exam without practical separation methods.
  • There is a request for examples of questions that would clarify the identification of mixtures versus compounds.
  • A participant mentions that wood is an example of a mixture, which prompts further discussion on the classification of various substances.
  • One participant suggests that most everyday substances are mixtures, citing distilled water and table salt as notable exceptions.

Areas of Agreement / Disagreement

Participants express uncertainty about how to identify mixtures and compounds theoretically, indicating that multiple views remain on the best approach to classification without practical experimentation.

Contextual Notes

Participants highlight the challenge of identifying substances based solely on their names in exam contexts, indicating a potential limitation in the clarity of definitions or examples provided in educational materials.

Who May Find This Useful

This discussion may be useful for students preparing for exams in chemistry or related fields, particularly those seeking to understand the theoretical distinctions between mixtures and compounds.

gracy
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i know in mixture two or more substance are not chemically bonded whereas in compounds substance are chemically bonded and also in mixtures substance can be separated by mechanical method but not compounds But i want to ask how can i identify whether substance is mixture or compound if it comes in theory exam there i cannot separate them ,nor can i predict whether substance are chemically bonded or not,how can i answer questions whether substance is mixture or compound in theory exams ? .
 
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Substance must be described in a way that makes it clear what it is, or it will be a substance that you are expected to know something about.

Can you give examples of such questions?
 
Borek said:
Substance must be described in a way that makes it clear what it is, or it will be a substance that you are expected to know something about.

Can you give examples of such questions?
For example wood.I never thought that wood is a mixture.
 
Now you know.
 
Borek said:
Now you know.
yes but i mean lots of examples would be out there about which i don't know,so is there any way with the help of which i can tell whether substance is mixture or compound just by reading it's name in question paper(i.e without any experiment,theoretically for theory exams .Not by practically or observing)
 
Most of the things you deal with on a daily basis are mixtures. Notable exceptions that I can think of at the moment are distilled (DI, RO) water (but potable water is already a mixture containing dissolved salts), table salt (although some kinds are not so pure, they contain artificially added iodides or other microelements) and white sugar.
 

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