7. Energy and Metabolism

Chemical Reactions

7. Energy and Metabolism

Chemical Reactions

Guided videos.

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Types of Chemical Reactions

Jason Amores Sumpter

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Animation: Exergonic and Endergonic Reactions

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Science Shorts: What is a Chemical Reaction?

Science Museum of Virginia

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What triggers a chemical reaction? - Kareem Jarrah

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Chemical Equations | Environmental Chemistry | Chemistry | FuseSchool

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Introduction to Chemical Reactions and Equations | Don't Memorise

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Chemical reactions introduction | Chemistry of life | Biology | Khan Academy

Khan Academy

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Practice this topic

Multiple Choice

Which of the following statements is true for all exergonic reactions?

a) The products have more total energy than the reactants.

b) The reaction proceeds with a net loss of free energy.

c) The reaction goes only in a forward direction: all reactants will be converted to products.

d) A net input of energy from the surroundings is required for the reactions to proceed.

Has a video solution.

Multiple Choice

Which statement is true about chemical reactions?

Multiple Choice

Which statement describes a reversible reaction that has reached chemical equilibrium?

Multiple Choice

An exergonic (spontaneous) reaction is a chemical reaction that __________.

Multiple Choice

Which of the following reactions would be endergonic?

Multiple Choice

When one molecule is broken down into six component molecules, which of the following will always be true?

Multiple Choice

Which part of the equation ΔG = ΔH – TΔS tells you if a process is spontaneous?

Multiple Choice

If, during a process, the system becomes more ordered, then __________.

Multiple Choice

From the equation ΔG = ΔH – TΔS it is clear that __________.

Multiple Choice

Molecules A and B contain 110 kcal/mol of free energy, and molecules B and C contain 150 kcal/mol of energy. A and B are converted to C and D. What can be concluded?

Multiple Choice

Which of the following determines the sign of ΔG for a reaction?

Multiple Choice

What do the sign and magnitude of the ΔG of a reaction tell us about the speed of the reaction? and

Multiple Choice

A chemical reaction is designated as exergonic rather than endergonic when __________. and

Textbook Question

Which of the following correctly describe an exergonic reaction? Select True or False for each statement. T/F The products have lower Gibbs free energy than the reactants. T/F Activation energy is required for the reaction to proceed. T/F The products always have lower entropy than the reactants. T/F The reaction always occurs quickly.

Has a video solution.

Textbook Question

What factors determine whether a chemical reaction is spontaneous or not?

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Textbook Question

Which of the following statements correctly describes any chemical reaction that has reached equilibrium? (A)The concentrations of products and reactants are equal. (B)The reaction is now irreversible. (C)Both forward and reverse reactions have halted. (D)The rates of the forward and reverse reactions are equal.

Has a video solution.

Textbook Question

Using what you have learned about changes in Gibbs free energy, would you predict the ∆G value of catabolic reactions to be positive or negative? What about anabolic reactions? Justify your answers using the terms 'enthalpy' and 'entropy.'

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Showing 17 of 17 practice