Multiple Choice
Which of the following is considered a physical property of matter?
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1. Intro to General Chemistry
Physical Properties
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Why is it important to know the physical state (solid, liquid, gas) of materials involved in a chemical reaction?
A
The physical state has no impact on the outcome or progress of a chemical reaction.
B
The physical state is only important for identifying the chemical formula of the reactants.
C
The physical state determines the color of the products formed.
D
The physical state affects reaction rates and determines whether reactants can interact effectively.
Verified step by step guidance1
Understand that the physical state of a substance (solid, liquid, gas) influences how particles are arranged and how freely they can move.
Recognize that reaction rates depend on how often and how effectively reactant particles collide, which is affected by their physical states.
Note that reactants in the same phase (e.g., both gases or both liquids) generally interact more readily than reactants in different phases, which can limit contact and slow the reaction.
Consider that some reactions require reactants to be dissolved or in a particular phase to proceed efficiently, highlighting the importance of knowing physical states.
Conclude that knowing the physical state helps predict and control the speed and feasibility of a chemical reaction, making it essential for understanding reaction mechanisms and outcomes.
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