report1_soln(5) - The Solution for the 1st Report Chapter 1...

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The Solution for the 1 st Report Chapter 1 1-5 Consult the pages 4 and 5 in the textbook 1-23 (a) Chemical process . Iron is combining with oxygen in the presence of water to form a new substance (rust). (b) Physical process . Water as a solid (ice) is changing to liquid water. Melting does not change the composition. (c) Chemical process . The wood is changed by the combustion or burning into ash, which is a new substance with none of the properties of the wood. (d) Chemical process . The components of the potato are broken down into substances that can be absorbed by the digestive tract. 1-15 A homogeneous mixture has uniform composition and properties throughout. Among the examples given in this exercise, carbon dioxide (f) is the only pure substance. All samples of carbon dioxide would always contain the same ratio of carbon and oxygen. Examples (a), and (e) are homogeneous mixtures; examples (b), (c), (d), and (g) are heterogeneous mixtures. They have large particles that are suspended (mud, onion),
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This note was uploaded on 05/24/2011 for the course ENGINEERIN 1 taught by Professor Lee during the Spring '11 term at Sungkyunkwan.

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report1_soln(5) - The Solution for the 1st Report Chapter 1...

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