Question

lucy is learning that atoms are made up of several smaller particles. help her choose words from the word banks to complete the sentences below. you will not use all the words. nucleus proton neutron electron isotope core cloud 4. a positively charged particle in an atom is called a(n) proton 5. a particle with no charge is an atom called a(n) neutron 6. these two particles, mentioned above, form a dense center called the 7. each tiny particle that moves around this center is called a(n)

Explanation:

Protons and neutrons form the nucleus of an atom, which is the dense center. Electrons are the tiny particles that move around the nucleus.

Answer:

1. nucleus
2. electron