Multiple choice general knowledge science & technology

A solid object like a rock is almost entirely filled with empty space and only feels solid due to electrical repulsion forces

  1. True

  2. False

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Atoms are about 99.99% empty space - the nucleus is tiny compared to the electron cloud, and electrons themselves are point particles with virtually no volume. What we perceive as 'solidity' is actually the electromagnetic repulsion between electron clouds of adjacent atoms preventing them from occupying the same space.