4th Edition

ISBN: 9781259288722

Author: BAUER

Publisher: MCG

Concept explainers

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for a…

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained …

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Textbook Question

Chapter 1, Problem 92QP

Identify each of the following as a physical change or a chemical change.

(a) condensation of ethanol

(b) combining zinc and oxygen to make the compound Zinc oxide

(d) burning a piece of paper

(e) combining sodium metal with water, producing sodium hydroxide and hydrogen gas

(f) filtering algae from water

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Chapter 1, Problem 91QP

Chapter 1, Problem 93QP

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