7. State whether each of the following represents a chemical change or merely a physical change: (a) A few grams of sucrose (table sugar) are placed in a small beaker of deionized water; the sugar crystals “disappear,” and the liquid in the beaker remains clear and colorless. (b) A copper statue, over time, turns green. (c) When a teaspoon of baking soda (sodium bicarbonate) is placed into a few ounces of vinegar (acetic acid), volumes of bubbles (effervescence) are produced.
7. State whether each of the following represents a chemical change or merely a physical change: (a) A few grams of sucrose (table sugar) are placed in a small beaker of deionized water; the sugar crystals “disappear,” and the liquid in the beaker remains clear and colorless. (b) A copper statue, over time, turns green. (c) When a teaspoon of baking soda (sodium bicarbonate) is placed into a few ounces of vinegar (acetic acid), volumes of bubbles (effervescence) are produced.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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7. State whether each of the following represents a chemical change or merely a physical change:
(a) A few grams of sucrose (table sugar) are placed in a small beaker of deionized water; the sugar
crystals “disappear,” and the liquid in the beaker remains clear and colorless.
(b) A copper statue, over time, turns green.
(c) When a teaspoon of baking soda (sodium bicarbonate) is placed into a few ounces of vinegar
(acetic acid), volumes of bubbles (effervescence) are produced.
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