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Classifying Substances: From Pure Elements to Mixtures Explained

Chapter 3, Problem 36P

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QUESTION:

Classify each substance as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous.

(a) urine

(b) pure water

(c) SnickersTM bar

(d) soil

Questions & Answers

QUESTION:

Classify each substance as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous.

(a) urine

(b) pure water

(c) SnickersTM bar

(d) soil

ANSWER:

Step 1 of 2

Here, we are going to classify the given substances as element, compound, homogeneous mixture or heterogeneous mixture.

Matters can be classified into pure substance or mixtures based on their composition. Pure substances are those having fixed composition whereas mixtures are those having no fixed composition.

Pure substances can be elements or compounds. An element is a form of matter that cannot be broken down by chemical reactions into simpler substances. A compound is a substance composed of two or more different types of elements, chemically combined in a fixed proportion.

Mixtures can be homogeneous or heterogeneous. A homogeneous mixture has uniform composition throughout whereas heterogeneous mixture contain physically distinct parts and has non uniform composition.

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Classifying Substances: From Pure Elements to Mixtures Explained
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Classify substances into various categories: element compound homogeneous mixture and heterogeneous mixture. This video breaks down the fundamental distinctions between pure substances and mixtures illustrating with real-world examples like urine pure water a Snickers™ bar and soil. A concise guide for understanding the essence of material classification in chemistry.


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