Interpretation: The option that does not represent a chemical change should be identified.
Concept Introduction: In a chemical change, the
Answer to Problem 1STP
Correct answer: Paper being shredded.
Explanation of Solution
Reason for correct option:
During shredding a paper, only the appearance of the paper changes, and the chemical composition of the paper does not change. Since the chemical composition of paper remains the same, it is not a chemical change. Instead, it is a physical change.
Reasons for incorrect options:
Steel rusting, charcoal burning, and a newspaper yellowing in the sun are examples of chemical change as the chemical compositions are different from the initial substance and reactants. A completely new matter is obtained after steel rusting, charcoal burning, and a newspaper yellowing in the sun.
Chapter 2 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
- Draw and show the full mechanism of how the molecule ((1E, 3E, 5E)-1-methoxyhepta-1,3,5-triene) is built using substitution and elimination reactions. You can start with an alkane of any carbon length with any number of leaving groups attached or with a alkoxide of any carbon length (conjugate base of an alcohol). Show each step and and explanation for each reaction. Also include why the reagents and solvents were picked and what other products can be expected.arrow_forwardDon't USE AIarrow_forwardDon't USE AIarrow_forward
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