Front

What is potential energy in the context of chemical reactions?

Back

Potential energy is the energy stored in a system due to its position or configuration, which can be converted into kinetic energy during a reaction.

Tags

NGSS.HS-PS1-4

Front

What is an activated complex?

Back

An activated complex, or transition state, is a temporary, unstable arrangement of atoms that occurs during a chemical reaction at the peak of the energy barrier.

Tags

NGSS.HS-PS1-4

Front

How is activation energy defined?

Back

Activation energy is the minimum energy required for a chemical reaction to occur, allowing reactants to reach the activated complex.

Tags

NGSS.HS-PS1-5

Front

What does a potential energy diagram represent?

Back

A potential energy diagram visually represents the energy changes during a chemical reaction, showing the energy of reactants, products, and the activated complex.

Tags

NGSS.HS-PS1-4

Front

What is the difference between endothermic and exothermic reactions?

Back

Endothermic reactions absorb energy from the surroundings, while exothermic reactions release energy to the surroundings.

Tags

NGSS.HS-PS1-4

Front

In a potential energy diagram, what does the peak represent?

Back

The peak of the potential energy diagram represents the energy of the activated complex, which is the highest energy state during the reaction.

Front

What does the letter 'D' typically represent in a potential energy diagram?

Back

In a potential energy diagram, 'D' typically represents the energy of the products.

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What does the letter 'A' typically represent in a potential energy diagram?

Back

In a potential energy diagram, 'A' typically represents the activation energy, which is the energy difference between the reactants and the activated complex.

Front

How can you determine if a reaction is endothermic from a potential energy diagram?

Back

A reaction is endothermic if the energy of the products is higher than the energy of the reactants, indicating that energy was absorbed.

Tags

NGSS.HS-PS1-4

Front

What is the significance of the energy difference between reactants and products in a reaction?

Back

The energy difference between reactants and products indicates whether a reaction is endothermic or exothermic and how much energy is absorbed or released.

Tags

NGSS.HS-PS1-4