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What are two examples of changes in state that will generate an increase in molecular motion?
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What happens to molecular energy when a substance changes states?
The molecular energy will usually increase or decrease, depending on the exact situation.
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.
What are some examples of chemical change and properties?
Chemical changes: oxydation, reduction, thermal decomposition, synthesis, bromination, polymerization, etc. Chemical properties: flammability, corrosion, stability, molecular configuration, reactivity, etc.
Does mean molecular speed change as much as the temperature?
It changes in proportion to the temperature change.
What changes occur at the molecular level when ice cream melts and forms a liquid?
745
What happens to molecular energy when a substance changes states?
The molecular energy will usually increase or decrease, depending on the exact situation.
What happens when a substance changes state from liquid to a solid?
The molecules/atoms move far apart. As the separation between paricles increase, the state is changed. The temperature does not rise because the heat is used to overcome inter-molecular forces.
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 molecular motion changes as a substance changes from one state to another?
Molecular motion is less constrained in liquid than in solid and is less constrained in gas than in liquid.
How the molecular structure of lead changes as it melt?
Melting is a physical change, so the molecular structure doesn't change.
How does matter physically change when it changes its phase or state?
Its motion changes speed on the molecular level
Is water condensing a chemical change?
No, it is a Physical Change. Physical Changes are concerned with energy and states of matter. A physical change does not produce a new substance. Changes in state or phase (condensation, melting, freezing, vaporization, sublimation) are physical changes. Other examples of physical changes include crushing a can, melting ice, and breaking a bottle. Chemical changes take place on the molecular level. A Chemical Change produces a new substance. Some examples of chemical changes include combustion (burning) and rusting of a metal.
What changes occur if you burn a piece of charcoal?
the heat will generate
What is the effect of heat on solid?
Heat increase molecular vibration in solid and to the certain point, the molecule would overcome the attractive force and change the state to liquid or gas depending on the surrounding pressure.
Phase changes are examples of what changes?
Puberty
What do climate models tell about slowing the increase of global warming?
Slowing the increase in Global warming can only be done by reducing the amount of heat that we generate every day. Without changes in our heat production the level of the oceanwill reach Ten foot in about thirty years.
What are facts about change?
Chemical changes take place on the molecular level
