3 questions that confused me alot (science)?

Question

Hello experts and everyone!!
I wanna ask 3 questions that confused me alot
Please if anyone would answer my questions :)
Wish you all of best of the best best very best luck!!

1.) How do you think these molecules are arranged in solids? In liquids? In gases?

2.) What happens to their arrangement when a solid is heated and the melting point is reached?

3.) What happens to the arrangement at the boiling point?

Answer 1

Molecules are arranged like tightly packed sardines in a tin for a solid, more loosely for a liquid - like chips in a bag, there is always that extra space, and even farther apart for a gas.

Also, molecules move around faster in gasses than in liquids, and in liquids than in solids. On solids the best that they can do is vibrate because of all of the other molecules trapping them in.

When a solid is heated to melting point, the molecules gain enough energy to slide past each other - making it a fluid.

When boiling point is reached, there is enough energy and collisions that the molecules can separate from each other and fly off into the air - like the steam from the kettle.

Answer 2

Hmm, which are "these" molecules?
In general:
1. In a solid, molecules are very tightly packed. They oscilate in their place, but don't leave it. They may build a pattern (like the molecules of a piece of quartz) or not (like the molecules of butter). Imagine a glass full of rice corn where you put some glue. Each corn stays at its place, always.
2. When you heat a solid, the molecules oscilate stronger. At the melting point, the tight bonds between them are broken. They still stay together, but they can shift and leave their place. Imagine you did something to your glass to remove the glue: all corns stay where they are, but when you tilt the glas, the corns move, like flowing.
3. If you heat your liquid enough to boil, the molecules move so quick, that they break the weak bonds which hold them together, and they space themselves wide. In a model it would look like you put the glass with the rice into a zero-gravity room: every corn floats somewhere not depending on the others.

Answer 3

1&2: in solids there are very strong forces between molecules; some solids have crystal structure like metals and some are amorphous like nonmetals; in both case the intermolcular forces are very high, when you heat the solid it reaches to a temperature which is called melting temperature. at this temperature solid receive the latent heat of fusion and will liquify(latent heat of fusion just breaks the intermolcular bonds and there is no temperature change) at this time there is no specific molecualr structure and the intermolecular forces changed in kind(they are weaker); the molecules can slide over eachother and have more freedom for motion because they have more energy;
3:at boiling all intermolecular forces breaks and there is no frce between molecules because they recieve latent heat of vaporization
This is a general view to changing material state from solid to vapor; for specific materials there are more detailed info.s

Answer 4

1) in solids the molecules are closely confined and unable to have a wide range of motion
liquids...the molecules stay together but have a very weak force of attraction between them allowing them to move freely. and in gases the molecules are not connected to one another and can go anywhere.
2) the molecules lose the confinment they had and are able to move around
3)it turns into a gas and is able to move freely

Answer 5

Solids--Atoms or Molecules are held tightly in place....
Liquid(melted)-- atoms or Molecules move relatively freely....
Gas Phase ( boiling point)--Atoms or molecules move essentially unconstrained

Answer 6

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