Concept explainers
(a)
Interpretation:
Whether the given statement is a chemical property or a physical property needs to be determined.
At room temperature, mercury is a liquid.
Concept introduction:
Physical property is the characteristic of a substance measured or observed without changing the identity of substance. It includes color, hardness, density, melting and boiling points. In the other hand, chemical property describes the substance ability to convert into a new substance by a
(a)
Answer to Problem 113A
The given statement is a physical property.
Explanation of Solution
Physical property is the characteristic of a substance measured or observed without changing the identity of substance. It includes color, hardness, density, melting and boiling points.
The given statement is a physical property as it defines the state of mercury at room temperature and no change in composition is taking place.
(b)
Interpretation:
Whether the given statement is a chemical property or a physical property needs to be determined.
Sucrose exists as a white, crystalline solid’’
Concept introduction:
Physical property is the characteristic of a substance measured or observed without changing the identity of substance. It includes color, hardness, density, melting and boiling points. In the other hand, chemical property describes the substance ability to convert into a new substance by a chemical reaction.
(b)
Answer to Problem 113A
The given statement is a physical property.
Explanation of Solution
Physical property is the characteristic of a substance measured or observed without changing the identity of substance. It includes color, hardness, density, melting and boiling points.
The given statement is a physical property as it defines the state of sucrose and no change in composition is taking place.
(c)
Interpretation:
Whether the given statement is a chemical property or a physical property needs to be determined.
Iron rusts when it is exposed to moist air.
Concept introduction:
Physical property is the characteristic of a substance measured or observed without changing the identity of substance. It includes color, hardness, density, melting and boiling points. In the other hand, chemical property describes the substance ability to convert into a new substance by a chemical reaction.
(c)
Answer to Problem 113A
The given statement represents a chemical property.
Explanation of Solution
Rusting of iron changes the iron solid to iron oxide. Since, a new substance is formed thus, this is a chemical property.
(d)
Interpretation:
Whether the given statement is a chemical property or a physical property needs to be determined.
Burning of paper.
Concept introduction:
Physical property is the characteristic of a substance measured or observed without changing the identity of substance. It includes color, hardness, density, melting and boiling points. In the other hand, chemical property describes the substance ability to convert into a new substance by a chemical reaction.
(d)
Answer to Problem 113A
The given statement represents a chemical property.
Explanation of Solution
Burning of paper results in the production of heat and light thus, it is a chemical change. Also, the process is irreversible as ash formed cannot be converted back to the paper.
Chapter 5 Solutions
Chemistry: Matter and Change
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