Chemistry

Chemistry

Problem

A partially completed Venn diagram comparing physical changes and chemical changes appears in your textbook. The two large circles represent the two categories, and an overlapping region is reserved for characteristics shared by both. Use the verbal description of the diagram below to respond to parts (a)–(d). • Circle I (left) is labelled “Physical Change.” Two bullet points appear but are blank. • Circle II (right) is labelled “Chemical Change.” Two bullet points appear but are blank. • The overlapping region between the circles contains two empty bullet points. Respond in complete sentences; bulleted formatting is acceptable where appropriate. (a) Write two characteristics that belong only in Circle I (Physical Change). (b) Write two characteristics that belong only in Circle II (Chemical Change). (c) Write two characteristics that belong in the overlapping region (shared by both types of change). (d) Using the completed diagram, explain—at the macroscopic level—why melting ice is classified as a physical change whereas burning a strip of magnesium ribbon in air is classified as a chemical change.

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