GOB Chemistry

Learn the toughest concepts covered in your GOB - General, Organic, and Biological Chemistry class with step-by-step video tutorials and practice problems.

Matter and Measurements

Physical & Chemical Changes

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A physical change involves a change in the phases of matter, whereas a chemical change involves a change in chemical bonds. 

Physical vs Chemical Changes

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concept

Physical and Chemical Changes

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example

Physical & Chemical Changes Example 1

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concept

Physical & Chemical Changes

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Physical & Chemical Changes Example 2

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Problem

Which of the following is a physical change?

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concept

Physical & Chemical Changes

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concept

Physical & Chemical Changes

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example

Physical & Chemical Changes Example 3

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Problem

Which of the following represents a reversible change?