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What are two examples of changes in state that will generate an increase in molecular motion?
Melting ice to form liquid water or boiling liquid water to produce steam are two examples of changes in state that lead to an increase in molecular motion. In both cases, the added energy causes the molecules to move more rapidly and with greater freedom.
What do things do when they get warm?
Things generally expand and become less dense when they get warm due to the increase in molecular motion. This expansion can lead to changes in volume, shape, or state of matter, depending on the material.
Predict what will happen to the state of the substance the atomi and molicular activity?
As the substance undergoes an increase in temperature, its atomic and molecular activity will also increase. This will result in the particles moving faster and having more energy, potentially leading to a change in state if the substance reaches its melting or boiling point.
What kind of change such as a change of state the substance of the whole changes but its underlying structure remains the same?
In changes in which the molecular structure of a substance remains constant, such as changes of state, we often refer to these changes as Physical Changes. If the molecular structure is altered it would be a Chemical Change.
How does KMT explain the changes of state?
The Kinetic Molecular Theory (KMT) explains changes of state by describing how the motion and interactions of molecules change as temperature or pressure is altered. For example, when a substance is heated, the molecules gain kinetic energy and move faster, leading to a change from a solid to a liquid or a liquid to a gas. Similarly, increasing pressure can compress gases and cause them to change from a gas to a liquid or solid state.
How does matter physically change when it changes its phase or state?
Its motion changes speed on the molecular level
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.
What happens to temperature as energy is added to a substance that is changing state?
The temperature remains constant during a change of state as the energy is used to break intermolecular bonds rather than increase molecular motion. Once the substance has completely changed state, the temperature will start to rise again as the added energy increases the molecular motion.
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 are two examples of changes in state that will generate an increase in molecular motion?
Melting ice to form liquid water or boiling liquid water to produce steam are two examples of changes in state that lead to an increase in molecular motion. In both cases, the added energy causes the molecules to move more rapidly and with greater freedom.
Which state of matter has the least molecular motion?
The solid state has the least molecular motion.
What does Heat causes object to?
Heat causes objects to increase in temperature, which leads to the molecules within the object moving more rapidly and spreading out. This increase in molecular motion can cause the object to expand, change state (e.g. from solid to liquid), or emit radiation.
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.
A change of state is a type of what change?
A change of state is a molecular change.
What is a change in the state of motion evidence of?
A change in the state of motion of an object indicates that a force has been applied to it. It accelerates in response, and this appears as a change in its state of motion. It may speed up, slow down, or change direction in response to the applied force.
What is the change in entropy when an icicle melts at 2 degrees Celsius?
The change in entropy when an icicle melts at 2 degrees Celsius is positive because the solid ice is transitioning to liquid water, which has more disorder and randomness at the molecular level. The increased molecular motion and randomness in the liquid state contribute to an overall increase in entropy during the melting process.
What does it take to change an objects state of motion?
it takes an unbalanced force to change an object's state of motion
