Chemistry Catalysts Flashcards

Study Notes

Photosynthesis and Endothermic Reactions

Photosynthesis is classified as an endothermic reaction, meaning it absorbs energy from the surroundings.

Initiation of Chemical Reactions

Activation energy must be reached for a chemical reaction to commence; it is the minimum energy threshold required.

Enzymes as Catalysts

Enzymes function as catalysts, substances that accelerate chemical reactions without being consumed in the process.

Understanding Activation Energy

Activation energy is defined as the energy necessary to either form or break the bonds between reactant molecules.

Role of Catalysts

Catalysts enhance the speed of chemical reactions by providing lower energy pathways, making reactions occur more efficiently.

Nature of Chemical Reactions

A chemical reaction involves breaking existing bonds between atoms and forming new bonds, leading to the transformation of reactants into products.

Experimental Design in Reaction Rate Analysis

To investigate if an inorganic substance (A) affects the reaction rate between two colored liquids (X and Y), one should first time the clarity of the mixture of X and Y, then repeat the timing with the addition of substance A. This experiment will reveal if A serves as a catalyst.

Lock-and-Key Mechanism

The lock-and-key mechanism describes the specific complementary shapes of an enzyme and its substrate, enabling precise biochemical interactions.

Catalyst Conservation in Reactions

At the conclusion of a chemical reaction, the amount of catalyst present remains unchanged compared to its initial quantity, highlighting its role in facilitating but not altering the overall reaction mass.

Description

Explore essential concepts related to catalysts and chemical reactions with these flashcards. Key terms such as photosynthesis, activation energy, and enzymes are defined for better understanding. Enhance your chemistry knowledge with this focused study tool.