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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 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.
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.
Describe the changes in gas pressure?
The increase in solubility causes increase in pressure.
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 does matter physically change when it changes its phase or state?
Its motion changes speed on the molecular level
Phase changes are examples of what changes?
Puberty
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 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.
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.
What changes occur if you burn a piece of charcoal?
the heat will generate
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 examples of expansions and contractions of matter?
Examples of expansions of matter include the increase in volume of a gas when heated and the expansion of a metal strip in response to temperature changes. Examples of contractions of matter include the shrinking of a balloon when the gas inside cools down and the contraction of a metal wire when it is cooled.
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.
