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Which statement best describes the relationship between compounds and elements?
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1. Intro to General Chemistry
Chemical Properties
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Which of the following is a common feature of chemical reactions?
A
No energy change involved
B
Formation of new substances with different chemical properties
C
Atoms are destroyed during the reaction
D
Change in physical state without altering chemical composition
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Understand that a chemical reaction involves the transformation of substances into new substances with different chemical properties.
Recall that during chemical reactions, atoms are neither created nor destroyed; they are rearranged to form new molecules.
Recognize that energy changes usually occur during chemical reactions, either absorbed or released, so 'no energy change' is not a common feature.
Note that a change in physical state without altering chemical composition is a physical change, not a chemical reaction.
Conclude that the common feature of chemical reactions is the formation of new substances with different chemical properties.
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