Question

fill - in - the blank questions: instructions: read the question and then complete the sentences by filling in the blanks with the appropriate words or phrases from the word bank... word bank: kinetic, electrons, entropy, molecular, electrostatic, thermodynamics, catalysts, activation, equilibrium, conservation 1. the law of ____ of energy states that energy cannot be created or destroyed in an isolated system. 2. __ forces play a crucial role in the formation and breaking of chemical bonds during reactions. 3. the __ energy is the minimum amount of energy required for reactants to undergo a chemical reaction. 4. in chemical reactions, __ can lower the activation energy, thereby making the process more efficient. 5. __ theory explains how and why particles react with each other by colliding with sufficient energy and correct orientation. 6. the behavior of __ during chemical reactions is critical in quantum mechanics, where their configurations determine chemical properties. 7. the concept of __ helps describe the energetic changes and the directionality of chemical reactions. 8. reactions that occur without external energy input often do so because their progression increases the __ of the system. 9. __ mechanics offers insights into how particles such as electrons behave within atoms and molecules differently from classical physics predictions. 10. the state of ____ in a closed system tends to shift as chemical reactions drive the system to different energies or phases.

Explanation:

1. The law of conservation of energy is a fundamental principle stating energy's indestructibility in an isolated system.
2. Electrostatic forces are key in chemical - bond formation and breaking due to charged - particle interactions.
3. Activation energy is the minimum energy for reactants to start a chemical reaction.
4. Catalysts speed up reactions by lowering activation energy.
5. Molecular theory (kinetic - molecular theory) explains particle reactions via collisions with proper energy and orientation.
6. Electrons' behavior is crucial in quantum mechanics for determining chemical properties.
7. Thermodynamics deals with energy changes and reaction directionality.
8. Reactions without external energy often occur as they increase the system's entropy (measure of disorder).
9. Quantum mechanics describes sub - atomic particle behavior differently from classical physics.
10. Equilibrium in a closed system shifts with chemical reactions.

Answer:

1. conservation
2. electrostatic
3. activation
4. catalysts
5. molecular
6. electrons
7. thermodynamics
8. entropy
9. quantum
10. equilibrium