Chemistry Concepts and Applications Flashcard

Front

What is the role of chlorine monoxide (ClO) in the ozone depletion process?

Back

Chlorine monoxide (ClO) reacts with ozone to release chlorine and oxygen, contributing to ozone depletion.

Front

What is the Zeroth Law of Thermodynamics?

Back

If two systems are in thermal equilibrium with a third system, they are in thermal equilibrium with each other.

Front

In an exothermic reaction, what is the relationship between the energy of the reactants and the products?

Back

The energy of the reactants is higher than the energy of the products.

Front

Which factor can increase the likelihood of reactants coming into contact?

Back

Increasing the concentration of reactants.

Front

Which of the following is a balanced chemical equation?

Back

2H_2 + O_2 → 2H_2O.

Front

Define exothermic reaction.

Back

An exothermic reaction is a chemical reaction that releases energy in the form of heat.

Front

What is the definition of thermodynamic equilibrium?

Back

Thermodynamic equilibrium is a state where macroscopic properties do not change over time, indicating that the system is in balance.

Front

What is the significance of activation energy in a chemical reaction?

Back

Activation energy is the minimum energy required for reactants to undergo a chemical reaction.

Front

Explain the concept of entropy in thermodynamics.

Back

Entropy is a measure of the disorder or randomness in a system, often associated with the second law of thermodynamics.

Front

What is a catalyst and how does it affect a chemical reaction?

Back

A catalyst is a substance that increases the rate of a chemical reaction without being consumed, by lowering the activation energy.