Question

1. choose all that apply. which two facts are about electrons? they reproduce and increase the mass of the atom over time. they move extremely fast in the electron cloud around the atoms nucleus. they are the largest part of an atom. the negatively charged particles are smaller than protons and neutrons.

Explanation:

Electrons are negatively - charged subatomic particles. They move very fast in the electron cloud around the nucleus and are smaller than protons and neutrons. They do not reproduce and are not the largest part of an atom.

Answer:

They move extremely fast in the electron cloud around the atom's nucleus.
The negatively charged particles are smaller than protons and neutrons.