Question

1. What are the two main parts of an atom?

2. Which part of an atom has the most mass?
3. What subatomic particles make up an atom

Answer 1

Atoms consist of two main parts: the nucleus and the electron cloud. The nucleus holds the protons and neutrons, which contribute most of the atom's mass, while electrons make up the surrounding cloud.

Step-by-step explanation:

Understanding Atoms and Their Components

The two main parts of an atom are the nucleus and the electron cloud. The nucleus contains protons and neutrons, while the electron cloud is made up of electrons.

The part of an atom with the most mass is the nucleus because it contains protons and neutrons, which are much heavier than electrons.

The subatomic particles that make up an atom are protons, neutrons, and electrons. Protons have a positive charge, neutrons are neutral, and electrons have a negative charge. While electrons are much lighter and orbit the nucleus at high speeds, it is the protons and neutrons that account for most of an atom's mass. In fact, an electron has about 1/2000th the mass of a proton or neutron.

Answer 2

the nucleus, which is in the center of the atom and contains protons and neutrons, and the outer region of the atom, which holds its electrons in orbit around the nucleus.