If cream, sugar, and flavorings are mixed and frozen to make ice cream is a physical change or a chemical reaction . Concept introduction: Physical change is defined as that change in which the chemical composition of the substance does not change. In physical change one form of a substance is changed to another form, no new product is formed. Examples of physical change are condensation, melting and freezing. A chemical change is defined as that change in which the chemical composition of the substance changes. In a chemical reaction, the formation of a new product takes place. Examples of a chemical reaction are rusting of iron and formation of a precipitate.
If cream, sugar, and flavorings are mixed and frozen to make ice cream is a physical change or a chemical reaction . Concept introduction: Physical change is defined as that change in which the chemical composition of the substance does not change. In physical change one form of a substance is changed to another form, no new product is formed. Examples of physical change are condensation, melting and freezing. A chemical change is defined as that change in which the chemical composition of the substance changes. In a chemical reaction, the formation of a new product takes place. Examples of a chemical reaction are rusting of iron and formation of a precipitate.
Solution Summary: The author explains that a physical change is defined as that change in which the chemical composition of the substance does not change.
Definition Definition Transformation of a chemical species into another chemical species. A chemical reaction consists of breaking existing bonds and forming new ones by changing the position of electrons. These reactions are best explained using a chemical equation.
Chapter 1, Problem 1.54PP
a.
Summary Introduction
To determine:
If cream, sugar, and flavorings are mixed and frozen to make ice cream is a physical change or a chemical reaction.
Concept introduction:
Physical change is defined as that change in which the chemical composition of the substance does not change. In physical change one form of a substance is changed to another form, no new product is formed.
Examples of physical change are condensation, melting and freezing.
A chemical change is defined as that change in which the chemical composition of the substance changes. In a chemical reaction, the formation of a new product takes place.
Examples of a chemical reaction are rusting of iron and formation of a precipitate.
b.
Summary Introduction
To determine:
If milk spoils and becomes sour is a physical change or a chemical reaction.
Concept introduction:
Physical change is defined as that change in which the chemical composition of the substance does not change. In physical change one form of a substance is changed to another form, no new product is formed.
Examples of physical change are condensation, melting and freezing.
A chemical change is defined as that change in which the chemical composition of the substance changes. In a chemical reaction, the formation of a new product takes place.
Examples of a chemical reaction are rusting of iron and formation of a precipitate.
c.
Summary Introduction
To determine:
If a puddle of spilled nail polish remover disappears is a physical change or a chemical reaction.
Concept introduction:
Physical change is defined as that change in which the chemical composition of the substance does not change. In physical change one form of a substance is changed to another form, no new product is formed.
Examples of physical change are condensation, melting and freezing.
A chemical change is defined as that change in which the chemical composition of the substance changes. In a chemical reaction, the formation of a new product takes place.
Examples of a chemical reaction are rusting of iron and formation of a precipitate.
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C.
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Identify and select all structures below that represent a constitutional isomer(s) of the compound shown above.
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H
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A.
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B.
H-
-H
D.
H
H H
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E.
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H
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F.
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Polylactic acid (shown below) is a biodegradable polymer used for food packaging. Identify the monomer(s) used in the production of this polymer using a condensation process.