Answer:
Matter has three main phases: solid, liquid, and gas. These are the states in which a matter can take form. When a matter changes from one phase or state to another, it goes through a process. Factors such as temperature and pressure are what brings about these changes.
Explanation:
To illustrate and give you an idea of these processes, we will water as an example.
The most common form that water takes is liquid. This is when it is fluid and takes the shape of its container. When the temperature rises, water goes through evaporation, where it turns from liquid to gas. Water that takes the form of a gas is called water vapor. When these vapors come together, they usually form clouds.
When the temperature of gas gets into contact with something colder than it is, its own temperature decreases, and condensation will start to occur. This is when a gas turns into liquid. Clouds will start to pour water.
When water is placed in colder temperatures, it solidifies when it reaches its freezing point. This can also be called crystallization. Water turning from liquid to solid makes ice.
When ice is exposed to heat, it undergoes melting. Turning from solid to liquid, going back to the original state of water.
When ice evaporates into a gas, like in the case of dry ice used to make smoke and fog effects in movies and theatre plays, it changes from solid to gas without turning into a liquid first. This is what we call sublimation and it happens when a solid matter is exposed to a higher temperature at a certain atmospheric pressure. Another example are mothballs that decrease in size over time.
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