Introduction About The States of Matter :
States of matter on the site. Solids, liquids, gases, are different states that have different physical properties. Each of these states is also known as a phase. Elements and compounds can move from one phase to another when specific physical conditions change.To know more about The States of Matter ,watch The States of Matter Video to learn more .
Matter that is composed of atoms packed tightly together are known as solids.
Liquids do not hold their shape at room temperature. There is space between the atoms of a liquid and they move slightly all of the time.
Gases not only do not hold their shape at room temperature, they don’t even stay put. Gases are always moving. There is so much space between the atoms in gas that you can move around in them easily.
A phase change is a change in the state of matter from one form to another.There are four types of phase changes: melting, boiling or vaporizing, condensing, and freezing. An example of melting is when a solid changes to a liquid. When thermal energy is added to an ice cube, its molecules begin to move faster. This creates more space between the molecules and allows them to slip past each other changing the ice into water. If more thermal energy is added, the molecules in the water further increase their motion. This causes the water to boil or vaporize and turn into water vapor, a gas. Phase changes also result when thermal energy is removed from matter. When a gas such as water vapor is cooled, it condenses or changes into water, a liquid. The removal of thermal energy
allows the molecules to slow their kinetic motion. As the molecules slow down, they pack more closely together and change the state of matter. Another phase change occurs when a liquid changes to a solid, or freezes. Freezing is the result
Useful for CBSE, ICSE, NCERT & International Students
Grade : 5
Subject : Evs
Lesson :States of matter
Topic: States of Matter
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