What happens to the particles as the object changes from gas to solid? O Particles speed up and move farther apart
O Particles slow down and move farther apart.
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O Particles slow down and move closer together
O Particles speed up and move closer together

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high

these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.