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We love all our things around us like our phones, laptops, T.Vs and our parents. They are all made up of particles. Particles are the smallest part of the matter which is still the matter. They can go into different states by temperature.

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Solids have particles which are very close together and vibrate. They are also strongly attracted to each other and the particles are in one place. Liquids have particles which can move in every direction and have space between every particle. Gases have particles which can move in every direction and very far apart. All solids maintain a physical shape, all liquids take the shape of the container and gases can blow out to fill up any container. All of these states change volume when they are heated or cooled down. Their mass stays the same but the volume and the density will change. For eg. glass becomes heated from a liquid to a solid and the liquid's density and mass is different from the glass's density and mass. The matter is the same but the density and volume differ depending on being heated or cooled. Another example are icebergs. They float because they have lower density then water and different volume.

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The Particle Model Theory has 6 rules or statements that every particle in an object follows. 1. All matter is made up of particles. 2. Every particle is the same in the matter it’s in  disregarding of the state it is in (solid, liquid or gas). 3. All particles are attracted to each other and get stronger the closer they are. 4. There is always space between the particles regardless of the state. 5. Particles are always in motion even in solids (the more heat there is in the object, the faster the particles travel changing the state of matter). All these rules work together making a theory about how all matter is made. These rules apply everywhere, even in us humans.

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The particle theory says that the temperature can change the state of the matter. If you take ice as an example for a solid, the particles of that are very close together and are vibrating in their own place. When we add heat to that ice, it melts becoming water where the particles are a little far apart and they can move in any direction. If we had more heat to this liquid, it will turn into vapor which is gas where all the particles are very far apart and move very fast. The heat gives energy to the particles, making them separate from each other. This process can also be reversed by freezing the water to turn into the ice which is a solid. Two or more substances forming a mixture can also be solidified or liquified. It can also be turned into a gas.

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In conclusion, particles are all around us and we encounter them everyday. We also use the temperature to melt or freeze something very often. We need to know about the states of matter: solid liquid and gas. Volumes of the matter differ depending on the state. Particles will always be around us

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There are many different object which have different temperatures to melt or solidify them. Something like ice isn't very hard to melt but hard metals like iron are kind of difficult and have to go through a furnace to melt iron. Your hands produce heat which is used to keep your body warm and not let you get very cold. The furnace in your home keeps your house from getting cold. If your body didn't produce heat, you can get many diseases and can even die. This is why we need to keep regulating heat in certain areas so the particles don't get close to each other. Volcanoes have magma which is very hot is a liquid. But once it erupts, it cools down leaving rocks everywhere. This magma turns into solid because of the particles contacting with the cold air outside the volcano.

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Particles make up everything you touch see and feel which is matter. Anything that takes up space and is made out of mass. The particle theory suggests that all matter is made up of particles. Every particles in every object is always moving even if it is in a solid form. There are three states which are determined by the movement of the particle. These states are solid, liquid and gas and plasma but the other three are the most common. You will see these things everywhere in your everyday life. You will even find all of these inside your body. Heat is produced in many ways. You will find ice as the most common state that changes because you can turn it into liquid by just warming it with your hand.