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The particles theory of matter can be used to explain how solids, liquids and gases are interchangeable as a result of increase or decrease in heat energy. When an object is heated the motion of the particles increases as the particles become more energetic. If it is cooled the motion of the particles decreases as they lose energy. Solid ,  Liquid , and gas all have different arrangements of these particles , giving them their special properties ! as you can see on the picture.

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Matter occurs in four states : solid , liquid , gases , and plasma. We usually hear about  the 3 main states that are solid ,liquid ,and gas but there is also the plasma which comes after the gas. Plasma: Plasma is a state of matter that is often thought of as a subset of gases, but the two states behave very differently. Like gases, plasma have no fixed shape or volume, and are less dense than solids or liquids. But unlike ordinary gases, plasma's are made up of atoms in which some or all of the electrons have been stripped away and positively charged nuclei, called ions, roam freely.

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Gases : gases are separated and far apart from each other, they move faster and they don't have a definite shape

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Gases : gases are separated and far apart from each other, they move faster and they don't have a definite shape

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Liquid : liquid are close together with no regular arrangement. They vibrate, move about, and slide past each other.
Solid : Solid are very close together, they move slowly and they usually have definite shape .

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Heat affects the movement of particles because, when the ice is heated, the particles will increase energy and move faster. So water goes from solid to liquid. So basically The hotter something gets, the more the molecules vibrate, and the less hot something gets, the less the molecules vibrate.

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When particles gain energy (they gain heat), they undergo a transformation in order to accommodate this.

When a particle gains energy, it gets excited. As a result, the atomic attraction becomes weaker and they break free from each other. This leads to the matter increasing in volume: solid -> liquid -> gas.

On the other hand, when a particle loses energy (gets colder), the attraction becomes stronger and they get together. This results in matter decreasing in volume: gas -> liquid -> solid.