Reversible Reactions and Equilibrium
Flashcard
•
Science
•
9th - 12th Grade
•
Medium
Barbara White
Used 1+ times
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8 questions
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1.
FLASHCARD QUESTION
Front
Reversible Reaction Noun
[ri-vur-suh-buhl ree-ak-shuhn]
Back
Reversible Reaction
A chemical reaction where products can react under ordinary conditions to re-form the original reactants, proceeding in both directions.
Example: This diagram shows that reactants (left side) can form products (right side), and the products can also turn back into the original reactants, as shown by the two-way arrow.
2.
FLASHCARD QUESTION
Front
Forward Reaction Noun
[for-werd ree-ak-shuhn]
Back
Forward Reaction
The reaction in a reversible process that proceeds from left to right, converting reactants into products as typically written.
Example: This diagram shows reactants on the left (methane and oxygen) transforming into products on the right, as indicated by the single forward-pointing arrow.
3.
FLASHCARD QUESTION
Front
Reverse Reaction Noun
[ri-vurs ree-ak-shuhn]
Back
Reverse Reaction
The reaction in a reversible process that proceeds from right to left, converting products back into the original reactants.
Example: This diagram shows that reactants (A, B) can form products (C, D), and the products can also react to change back into the original reactants.
4.
FLASHCARD QUESTION
Front
Chemical Equilibrium Noun
[kem-i-kuhl ee-kwuh-lib-ree-uhm]
Back
Chemical Equilibrium
A state of balance in a reversible reaction where the rates of the forward and reverse reactions are exactly equal.
Example: In a closed container, water evaporates and condenses at the same rate, reaching equilibrium. In an open container, water escapes and the process does not reverse.
5.
FLASHCARD QUESTION
Front
Equilibrium Position Noun
[ee-kwuh-lib-ree-uhm puh-zish-uhn]
Back
Equilibrium Position
The relative concentrations of reactants and products at equilibrium, indicating which direction of the reaction is favored at that point.
Example: This image shows that the equilibrium position, like a ball in a valley, is the point of lowest energy for both a physical object and a chemical reaction mixture.
6.
FLASHCARD QUESTION
Front
Le Châtelier's Principle Noun
[luh shaht-lee-eyz prin-suh-puhl]
Back
Le Châtelier's Principle
A principle stating that if a system at equilibrium is disturbed, it will shift to counteract the disturbance and restore equilibrium.
Example: This flowchart shows how a chemical reaction at balance (equilibrium) responds to a change (stress) by shifting forward or reverse to restore balance.
7.
FLASHCARD QUESTION
Front
Endothermic Adjective
[en-doh-thur-mik]
Back
Endothermic
Describes a chemical process or reaction that absorbs heat from its surroundings, causing a cooling effect on the environment.
Example: Applying heat to water causes it to boil and turn into vapor. This process is endothermic because the water must absorb heat energy to change state.
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