Lucippus And Student Democritus

Question 1

In fact, the ancient Greek philosophers ——— were the first to propose this idea, about 440 B.C.

Answer 1

Leucippus and his student Democritus

Question 2

———- had the idea that there are many kinds of atoms and each of them had specific shape and size and that all atoms move randomly around in space. However, they did not explain the motion of atoms.

Answer 2

Both Leucippus and Democritus