Why don’t atoms fall apart ?

Atoms don't fall apart due to there strong attraction to each other.

Explanation:

While atoms can be split they cant just fall apart. There strong attraction to each other keeps them together but when to the gap between them begins to expand the attraction begins to weaken. Think of it as two magnets and the atoms are the north and south poles and when they begin to separate the attraction weakens as they go further apart.

Sand and water can be separated by any of the following methods:

1. Sedimentation and decantation: This method involves the mixture being kept undisturbed for some time. After some time, sand being heavier and insoluble in water, settles down at the bottom of container. Now, water is poured into another container to separate it from sand.

2. Filtration: This method involves the mixture being passed through a filter paper (a filter with very fine pores). Sand particles being larger in size are retained by the filter paper and get separated from water.

I hope this helps! :D