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Ch.1 - Introduction: Matter, Energy, and Measurement
Brown - Chemistry: The Central Science 14th Edition
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Brown 14th EditionCh.1 - Introduction: Matter, Energy, and Measurement문제 13d
1장, 문제 13d

Classify each of the following as a pure substance or a mixture. If a mixture, indicate whether it is homogeneous or heterogeneous: (d) iodine tincture.

검증된 단계별 안내
1
Understand the definitions: A pure substance has a uniform and definite composition, while a mixture contains two or more substances physically combined. A homogeneous mixture has a uniform composition throughout, whereas a heterogeneous mixture has a non-uniform composition.
Identify the components of iodine tincture: It typically consists of iodine dissolved in alcohol, often with water.
Determine if iodine tincture is a pure substance or a mixture: Since it contains more than one component (iodine and alcohol), it is a mixture.
Assess the uniformity of the mixture: Iodine tincture is a solution where iodine is evenly distributed in alcohol, making it a homogeneous mixture.
Conclude the classification: Iodine tincture is a homogeneous mixture because its composition is uniform throughout.

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Pure Substances

A pure substance consists of a single type of particle and has a uniform and definite composition. Examples include elements like gold and compounds like water. Pure substances have consistent properties such as melting and boiling points, which do not change regardless of the sample size.
추천 영상:
가이드 코스
02:58
Classification of Matter Example

Mixtures

A mixture contains two or more different substances that are physically combined but not chemically bonded. Mixtures can be classified as homogeneous, where the composition is uniform throughout (like saltwater), or heterogeneous, where the composition varies (like a salad). The components of a mixture retain their individual properties.
추천 영상:
가이드 코스
01:03
Solubility and Mixtures

Iodine Tincture

Iodine tincture is a solution of iodine in alcohol, commonly used as an antiseptic. It is classified as a homogeneous mixture because the iodine is evenly distributed throughout the alcohol, resulting in a consistent appearance and composition. Understanding this classification helps in identifying the nature of the solution and its applications.
추천 영상:
가이드 코스
01:21
Beta Decay Reaction Example
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