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Pure Substances vs. Mixtures: Classifying Based on Composition & Distr
Chapter 3, Problem 35P(choose chapter or problem)
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) helium gas
(b) clean air
(c) rocky road ice cream
(d) concrete
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) helium gas
(b) clean air
(c) rocky road ice cream
(d) concrete
ANSWER:Step 1 of 2
Pure substance is defined as when a substance is made up of only one type of element or one type of molecule and the composition of the substance remain same.
Similarly,
Homogeneous is a mixture where components are equally or uniformly distributed and the composition remains the same throughout the mixture. In an homogeneous mixture, only one phase of matter is observed. The mixture can not be separated.
On the other hand, Heterogeneous is a mixture where components are not uniform. The mixtures have different phases of states. They are not identical to each other.
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Pure Substances vs. Mixtures: Classifying Based on Composition & Distr
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Understand the fundamental distinctions between pure substances and mixtures. Unpack the definitions and real-world examples of elements, compounds, homogeneous, and heterogeneous mixtures.