Particles in solids move ever so slightly. They are not completely at rest, but since they are so packed together it’s difficult for them to move. That’s what makes a solid a solid. Particles in liquids slide and move past each other fairly quickly, and have space to move. Particles in gases are the most spread apart, and because of this, they move the quickest. Hope this helped.
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When heat is added to a solid, its particles move _______
A. faster
B. slower
C. closer together
<em>D. the same speed</em>
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A. (I THINK-)
<h2>Explanation</h2>
When heat is added to an object, the molecules vibrate faster. As they go faster, there is more space in between the molecules.
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Subject: Science
Unit: Atoms, Molecules,
Grade: 5-7
(I think I might be wrong-)
The inner planets (in order of distance from the sun, closest to furthest) are Mercury, Venus, Earth and Mars.
A A because it look like the definition
