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The particles spread out and 'jumble' . Hope this helps ;) x
When a metal bar is heated....the particles in the area of the metal bar that is hot start vibrating.. knocking into each other and passing the heat energy on to cooler particles. The cooler end that isn't heated still has a rise in temperature just not as much as the heated area because the heat has almost been diluted.
The density will decrease because the heated metal contracts and its particles slow down.
No... radiation is the movement of waves and particles, and influence of movement upon all other matter around it or in it's path... What happens though, is that it causes (excellerates) the atoms in any material it encounters (and that material becomes hot, the greater the radiation, the greater and more violently it will be heated)...
Particles vibrate faster when they are heated.
The motion of particles is accelerated.
The particles in a liguid are bonded (not as strongly as a solid which is why it flows.) when it is heated the particles vibrate and eventually the bonds break and the particles break away. This is evaporation.
its a movement of small particles of matter
The speed of the gas particles will increase as they are heated. That is why the pressure in a container increases. The particles are hitting the walls of the container with more force as they are heated.
The particles are bonded together with some force when heat is supplied the then force between particles decreases and the start to move away from each other or we can say that the particles get that energy and become energetic and movement starts in individual particle and the force between the particles decrease. This is why when water is heated the particles detach from each other become steam.
they get excited and move around faster
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The particles start moving faster and the matter expands.
if they are heated then they turn to a liquid, if that are a soled well they are hard like ice
Thermal expansion occured.
Its particles acquire greater kinetic energy.
i dont know but all i know is that it is really hard lol