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The average speed of the random molecular motion increases.

The corresponding increase in molecular kinetic energy accounts

for what happened to all of that heat energy.

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What happens to most materials as they are heated?

Most materials expand when heated due to increased molecular motion, causing the particles to move farther apart. However, if heated to extremely high temperatures, materials can undergo phase changes, such as melting or vaporization. Additionally, some materials may decompose or undergo chemical reactions when heated.


What happens to the entropy of gas as it is heated?

As a gas is heated, its entropy generally increases. This is because the increased molecular motion and disorder associated with higher temperatures lead to a greater number of microstates available to the system, resulting in higher entropy.


What is random molecular motion?

Random molecular motion refers to the constant, unpredictable movement of molecules due to their thermal energy. This motion occurs in all substances, and the speed and direction of the molecules change rapidly as they collide with each other and their surroundings. It is this random motion that contributes to various macroscopic properties of matter, such as diffusion and viscosity.


Which state of matter has the least molecular motion?

The solid state has the least molecular motion.


How does the molecular motion of a substance change as it transitions from liquid to gas?

As a substance transitions from liquid to gas, the molecular motion increases. In the liquid state, molecules move more freely but are still close together. When the substance becomes a gas, the molecules move even more rapidly and are much farther apart.

Related Questions

What happens when the temperature of a substances changes?

When the temperature of a substance changes, the amount of random thermal motion on a molecular or atomic level changes accordingly; higher temperature means faster motion. A sufficient amount of temperature change will also result in a phase change. Cooling liquids freeze, heated liquids boil, heated solids melt, and so forth.


What expands in heat and shrinks in cold?

Most materials expand when heated due to increased molecular motion, and contract when cooled due to decreased molecular motion. Examples include gases, liquids, and solids such as metals and plastics.


What change in state involves a decrease in molecular motion?

The change from a gas to a liquid involves a decrease in molecular motion. In this phase transition, the particles come closer together, reducing their kinetic energy and resulting in a more ordered arrangement.


How does matter physically change when it changes its phase or state?

Its motion changes speed on the molecular level


Which change in state involves a decrease in molecular motion?

The change from a gas to a liquid involves a decrease in molecular motion. In this phase transition, particles lose energy and come closer together, resulting in a decrease in their overall movement and a more ordered arrangement.


How do the molecular energy molecular motion and overall mass of a substance change when matter changes state?

When matter changes state, the molecular energy generally increases as heat is added or decreases as heat is removed. Molecular motion increases as the substance transitions from a solid to a liquid to a gas. The overall mass of the substance remains the same throughout the phase change process, as no particles are added or removed.


What does Molecular Motion mean?

Molecular motion refers to the movement of molecules in a substance, which is manifested through various forms like translation, rotation, and vibration. This motion is driven by factors such as temperature and energy, and it affects the physical properties and behavior of substances. Understanding molecular motion is crucial in fields like chemistry and physics for explaining phenomena like diffusion and phase transitions.


WHICH observation does not show molecular motion?

Observation of an object at rest or stationary would not show molecular motion.


What happens to most materials as they are heated?

Most materials expand when heated due to increased molecular motion, causing the particles to move farther apart. However, if heated to extremely high temperatures, materials can undergo phase changes, such as melting or vaporization. Additionally, some materials may decompose or undergo chemical reactions when heated.


What is the transfer of heat through a fluid (liquid or gas) caused by molecular motion?

Convection is the transfer of heat through a fluid (liquid or gas) caused by molecular motion. As the fluid is heated, its molecules move faster and spread apart, becoming less dense. This creates convection currents that transport heat throughout the fluid.


What idea explains that molecules of an object military be faster as the object is heated?

As an object is heated, its molecules gain more kinetic energy, causing them to move faster. This increase in molecular motion results in higher average speeds of the molecules, which is why the object feels hotter to touch.


What happens to the entropy of gas as it is heated?

As a gas is heated, its entropy generally increases. This is because the increased molecular motion and disorder associated with higher temperatures lead to a greater number of microstates available to the system, resulting in higher entropy.