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

Explanation:

• Almost all of an atom's mass is found in its nucleus, located in the center of the atom:
• Atoms consist of a nucleus (containing protons and neutrons) and electrons. Protons and neutrons have much greater mass than electrons. So, most of the atom's mass is in the nucleus, which is at the center. This statement is True.
• An atom's nucleus can contain two types of particles: protons and neutrons:
• The nucleus of an atom contains protons (positively - charged) and neutrons (neutrally - charged). This is a fundamental atomic structure fact. So, this statement is True.
• The nucleus of every atom contains one or more protons. Each proton has a positive electrical charge:
• By definition, the nucleus must have at least one proton (e.g., hydrogen has one proton in its nucleus). Protons are positively charged. So, this statement is True.
• In many atoms, the nucleus also contains neutrons. A neutron has no electrical charge:
• Neutrons are neutral particles. Many atoms (except for some isotopes like protium - the most common isotope of hydrogen which has no neutrons) have neutrons in their nucleus. So, this statement is True.
• Most of an atom's mass is found in protons and neutrons:
• As protons and neutrons are much more massive than electrons (electrons have a mass of about \(9.1\times10^{- 31}\) kg, protons about \(1.67\times10^{-27}\) kg, and neutrons about \(1.69\times10^{-27}\) kg), most of the atom's mass is from protons and neutrons. So, this statement is True.
• A neutron has a positive electrical charge:
• Neutrons are neutral. Protons have a positive charge. So, this statement is False.
• The nucleus of an atom contains at least one proton:
• As mentioned before, the nucleus must have at least one proton (e.g., hydrogen). So, this statement is True.
• The nucleus of an atom is found in the atom's center:
• The atomic model (e.g., Rutherford's model) shows that the nucleus is at the center of the atom. So, this statement is True.

Answer:

Statement	True/False
An atom's nucleus can contain two types of particles: protons and neutrons	True
The nucleus of every atom contains one or more protons. Each proton has a positive electrical charge	True
In many atoms, the nucleus also contains neutrons. A neutron has no electrical charge	True
Most of an atom's mass is found in protons and neutrons	True
A neutron has a positive electrical charge	False
The nucleus of an atom contains at least one proton	True
The nucleus of an atom is found in the atom's center	True