Changes of State in Matter

 
Changes of State
 
 
Changes of State
 
Is the change of a substance from one physical
form to the other
All changes of states are physical changes, this
means that the identity of a substance does
not change
Ex. Ice turns to water through melting.  It is still
made of the same thing.
 
Energy
 
Particles of a substance have different
amounts of energy when the substance is in
different states.
Ex. Particles in Liquid water have more energy
than particles in ice
When a change of state happens, the energy
of the particles of the substance changes too.
So to change state you must add or remove
energy
 
Melting
 
Is the change of state from a solid to a liquid.
You must add energy to a solid to increase the
temperature.  As it heats up the particles of
the solid speed up.
The temperature at which a substance
changes from a solid to a liquid is the 
Melting
point.
Different substances have different melting
points
 
Melting
 
For a solid to melt, particles must overcome
their attraction to each other.
Melting is 
endothermic change 
because
energy is gained by the substance as it
changes.
 
Freezing
 
Change of state from a liquid to a solid
The temperature at which a liquid changes
into a solid is the 
freezing point
Freezing and melting happen at the same
temperature
To turn from a liquid to a solid the particles
must overcome the motion particles
 
Freezing
 
Freezing is an 
exothermic change
 because
energy is removed from, or taken out of the
substance as it changes
 
Vaporization
 
Change of state from a liquid to a gas
Two types of Vaporization
Takes place throughout a liquid is called
boiling
The temperature at which a liquid boils is
called the 
boiling point
Evaporation 
occurs at the surface of a liquid
below boiling point.
 
Condensation
 
Change of state from a gas to a liquid
Condensation point 
is the temperature at
which a substance changes from a gas to a
liquid.
 
 
Sublimation
 
Change of state from a solid directly to a gas.
Ex. Dry ice is colder than ice. Unlike ice, dry ice
does not melt into a puddle of liquid.
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Changes of state in matter refer to the physical transitions that substances undergo, such as melting, freezing, vaporization, and condensation. These transitions involve the addition or removal of energy, impacting the movement of particles and their arrangement. Despite the transformations, the identity of the substance remains constant. Melting involves the shift from a solid to a liquid by adding energy, while freezing represents the opposite process. Vaporization changes a liquid to a gas, either through boiling or evaporation. Lastly, condensation converts a gas back to a liquid. Understanding these changes is essential in the study of matter and its properties.

  • Matter
  • Changes of State
  • Energy
  • Melting
  • Vaporization

Uploaded on Sep 19, 2024 | 0 Views


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  1. Changes of State

  2. Changes of State Is the change of a substance from one physical form to the other All changes of states are physical changes, this means that the identity of a substance does not change Ex. Ice turns to water through melting. It is still made of the same thing.

  3. Energy Particles of a substance have different amounts of energy when the substance is in different states. Ex. Particles in Liquid water have more energy than particles in ice When a change of state happens, the energy of the particles of the substance changes too. So to change state you must add or remove energy

  4. Melting Is the change of state from a solid to a liquid. You must add energy to a solid to increase the temperature. As it heats up the particles of the solid speed up. The temperature at which a substance changes from a solid to a liquid is the Melting point. Different substances have different melting points

  5. Melting For a solid to melt, particles must overcome their attraction to each other. Melting is endothermic change because energy is gained by the substance as it changes.

  6. Freezing Change of state from a liquid to a solid The temperature at which a liquid changes into a solid is the freezing point Freezing and melting happen at the same temperature To turn from a liquid to a solid the particles must overcome the motion particles

  7. Freezing Freezing is an exothermic change because energy is removed from, or taken out of the substance as it changes

  8. Vaporization Change of state from a liquid to a gas Two types of Vaporization Takes place throughout a liquid is called boiling The temperature at which a liquid boils is called the boiling point Evaporation occurs at the surface of a liquid below boiling point.

  9. Condensation Change of state from a gas to a liquid Condensation point is the temperature at which a substance changes from a gas to a liquid.

  10. Sublimation Change of state from a solid directly to a gas. Ex. Dry ice is colder than ice. Unlike ice, dry ice does not melt into a puddle of liquid.

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