What is the effect of temperature on the concentration of products in a chemical reaction?
Chemistry NCFE 2018-19 #29-40

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Chemistry
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11th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
Increasing temperature generally increases the concentration of products due to higher kinetic energy, leading to more frequent collisions between reactant molecules.
2.
FLASHCARD QUESTION
Front
What is a chemical reaction?
Back
A chemical reaction is a process in which substances (reactants) are transformed into new substances (products) with different properties.
3.
FLASHCARD QUESTION
Front
What does it mean when a substance feels slippery and turns red litmus paper blue?
Back
It indicates that the substance is likely a base, as bases feel slippery and turn red litmus paper blue.
4.
FLASHCARD QUESTION
Front
How do you calculate the number of particles in a given number of moles?
Back
Use Avogadro's number (6.022 × 10²³ particles/mole). For example, 2.50 moles of O₂ = 2.50 × 6.022 × 10²³ = 1.51 × 10²⁴ particles.
5.
FLASHCARD QUESTION
Front
What is Le Chatelier's Principle?
Back
Le Chatelier's Principle states that if a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium shifts to counteract the change.
6.
FLASHCARD QUESTION
Front
What happens to a reaction at equilibrium when heat is added?
Back
If heat is added to an exothermic reaction at equilibrium, the reaction will shift to the left (toward the reactants) to absorb the excess heat.
7.
FLASHCARD QUESTION
Front
What is the difference between a physical change and a chemical change?
Back
A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.
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