Multiple Choice
During the process of cooking meat on a grill, which type of change primarily occurs?
1. Intro to General Chemistry
Chemical Properties
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What is the primary difference between a synthesis reaction and a decomposition reaction in terms of chemical equations?
A
A synthesis reaction results in a decrease in entropy, while a decomposition reaction results in an increase in entropy.
B
A synthesis reaction involves the exchange of ions between two compounds, while a decomposition reaction involves the transfer of electrons.
C
A synthesis reaction combines multiple reactants to form a single product, while a decomposition reaction breaks down a single reactant into multiple products.
D
A synthesis reaction requires heat to proceed, while a decomposition reaction occurs spontaneously at room temperature.
Verified step by step guidance1
Identify the key characteristics of a synthesis reaction: it involves combining two or more reactants to form a single product. This can be represented by a general chemical equation: A + B → AB.
Identify the key characteristics of a decomposition reaction: it involves breaking down a single compound into two or more products. This can be represented by a general chemical equation: AB → A + B.
Understand the concept of entropy in the context of these reactions: synthesis reactions typically result in a decrease in entropy because they form a more ordered single product, while decomposition reactions result in an increase in entropy as they produce multiple, more disordered products.
Clarify the misconception about ion exchange and electron transfer: synthesis and decomposition reactions are not primarily characterized by these processes. Ion exchange is more relevant to double displacement reactions, and electron transfer is a key feature of redox reactions.
Address the conditions under which these reactions occur: while some synthesis reactions may require heat, not all do. Similarly, decomposition reactions can require heat or other conditions to proceed, and they do not necessarily occur spontaneously at room temperature.
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