Question

almost all of an atoms mass is found in its nucleus, located in the center of the atom. an atoms nucleus can contain two types of particles: protons and neutrons.
the nucleus of every atom contains one or more protons. each proton has a positive electrical charge.
in many atoms, the nucleus also contains neutrons. a neutron has no electrical charge.
determine whether each statement is true or false to complete the table.

the nucleus of an atom is found in the atoms center.
the nucleus of an atom contains at least one proton.
most of an atoms mass is found in protons and neutrons.
a neutron has a positive electrical charge.

Explanation:

• The first statement: The text says "Almost all of an atom's mass is found in its nucleus, located in the center of the atom." So, the nucleus is in the atom's center.
• The second statement: "The nucleus of every atom contains one or more protons." So, it has at least one proton.
• The third statement: Protons and neutrons are in the nucleus, and "Almost all of an atom's mass is found in its nucleus". So, most mass is from protons and neutrons.
• The fourth statement: "A neutron has no electrical charge." So, it does not have a positive charge.

Answer:

• The nucleus of an atom is found in the atom's center: True
• The nucleus of an atom contains at least one proton: True
• Most of an atom's mass is found in protons and neutrons: True
• A neutron has a positive electrical charge: False