They expand causing them to move in the only direction available, up the thermometer.
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if they are heated then they turn to a liquid, if that are a soled well they are hard like ice
In a thermometer is a liquid metal called Mercury, so the liquid expands when it is heated up.
As the liquid in the thermometer is heated it expands, and the only way the expanding liquid can go is upward. As the liquid in the thermometer cools, it will contract, and the liquid will fall back down into the resevoir, causing the column of liquid to move downward.
When a liquid is heated, the particles gain energy and begin to move more rapidly. This increased kinetic energy causes the particles to move farther apart and slide past one another more easily. As a result, the liquid expands and becomes less dense.
fastly apropreatlly
it expands
it expands
it expands
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.
if they are heated then they turn to a liquid, if that are a soled well they are hard like ice
Its particles acquire greater kinetic energy.
it expands
In a thermometer is a liquid metal called Mercury, so the liquid expands when it is heated up.
The particles spread out and 'jumble' . Hope this helps ;) x
They begin to vibrate more quickly when a liquid is heated, it will evaporate. ie. the liquid will turn to vapour (gas). if the vapour i s collected, it will turn back to the liquid again once it is cooled (condensation) muck love, kate
expand
physical change