Conceptual Physical Science Explorations
2nd Edition
ISBN: 9780321567918
Author: Paul G. Hewitt, Leslie A. Hewitt, John A Suchocki
Publisher: Addison Wesley
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Textbook Question
Chapter 17, Problem 3RAT
What chemical change occurs when a wax candle burns?
(a) The wax near the flame melts.
(b) The molten wax is pulled upwards through the wick.
(c) The wax within the wick is heated to about
(d) The heated wax molecules combine with oxygen molecules.
Expert Solution & Answer
To determine
The correct option for the statement “The change occurring while burning of wax candle”.
Answer to Problem 3RAT
The correct option for the statement “The change occurring while burning of wax candle” is option (d).
Explanation of Solution
The transformations of matter are of two types. The types are physical change and chemical change. A chemical change occurs when two or more substances combine to form new and different substances.
When the wax candle is burned, the wax near the flame melts because of the heat. The state change happens from solid to liquid. It is a physical change.
When the heated wax is pulled upwards through the wick or when the wax within the wick is heated, no two substances combine to form new substances. So, both of them are not chemical changes.
When heated wax molecules combine with oxygen molecules they form carbon dioxide and ash. As two substances are combining to form new substances, it is a chemical change.
Conclusion:
Therefore, the correct option is option (d).
Chapter 17 Solutions
Conceptual Physical Science Explorations
Ch. 17 - Prob. 1RQCh. 17 - Prob. 2RQCh. 17 - What do the members of the Chemical Manufacturers...Ch. 17 - Prob. 4RQCh. 17 - How does the arrangement of particles in a gas...Ch. 17 - Prob. 6RQCh. 17 - What is it called when evaporation occurs beneath...Ch. 17 - Which is greater: waters heat of fusion or its...Ch. 17 - What happens to the chemical identity of a...Ch. 17 - What is a chemical bond?
Ch. 17 - What changes during a chemical reaction?Ch. 17 - Prob. 12RQCh. 17 - Why is the rusting of iron considered to be a...Ch. 17 - Prob. 14RQCh. 17 - Prob. 15RQCh. 17 - Prob. 16RQCh. 17 - What is the difference between an element and a...Ch. 17 - What does the chemical formula of a substance tell...Ch. 17 - What is the chemical formula for the compound...Ch. 17 - Why are common names often used for chemical...Ch. 17 - Water molecules vibrate and jostle about at...Ch. 17 - Prob. 2TCCh. 17 - Prob. 3TCCh. 17 - Prob. 1TECh. 17 - Of the three sciences physics, chemistry, and...Ch. 17 - Prob. 3TECh. 17 - Prob. 4TECh. 17 - Prob. 5TECh. 17 - Prob. 6TECh. 17 - Prob. 7TECh. 17 - Which has stronger attractions among its...Ch. 17 - Which occupies the greatest volume: 1 g of liquid...Ch. 17 - Prob. 10TECh. 17 - You take 50mL of water and combine it with 50mL of...Ch. 17 - Prob. 12TECh. 17 - What physical and chemical changes occur when a...Ch. 17 - Prob. 14TECh. 17 - Prob. 15TECh. 17 - Prob. 16TECh. 17 - Oxygen atoms are used to make water molecules....Ch. 17 - Prob. 18TECh. 17 - What is the chemical name for a compound with the...Ch. 17 - Prob. 20TECh. 17 - Chemistry is the study of (a) matter. (b)...Ch. 17 - Imagine that you can see individual molecules. You...Ch. 17 - What chemical change occurs when a wax candle...Ch. 17 - The phase in which atoms and molecules no longer...Ch. 17 - Prob. 5RATCh. 17 - Prob. 6RATCh. 17 - Prob. 7RATCh. 17 - If you have one molecule ofTiO2 , how many...Ch. 17 - Prob. 9RATCh. 17 - Prob. 10RAT
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