,NST2601 Assignment 3 (COMPLETE ANSWERS) 2025 –
DUE 26 JULY 2025;100% trusted ,comprehensive and
complete reliable solution with clear explanation
QUESTION 1 [30 MARKS]
1.1 Define the following: (20)
1.1 Definitions
a. Particle
A particle is a small unit of matter. In science, it refers to the
smallest pieces that make up substances, such as atoms,
molecules, or subatomic particles like protons and electrons.
b. Atomic Model
An atomic model is a scientific representation or theory that
explains the structure and behavior of atoms. Examples include
the Bohr model and the quantum mechanical model, which show
how electrons orbit the nucleus.
c. Subatomic
Subatomic refers to the particles that make up an atom. These
include protons, neutrons, and electrons — all smaller than an
atom and responsible for its mass and charge.
, d. Protons
Protons are positively charged subatomic particles found in
the nucleus of an atom. They determine the atomic number and
identity of an element.
e. Neutrons
Neutrons are neutral subatomic particles (no charge) located
in the nucleus of an atom. They contribute to the atom’s mass
and help stabilize the nucleus.
f. Electron Configuration
Electron configuration is the arrangement of electrons in an
atom's orbitals. It shows how electrons are distributed in
energy levels and sublevels around the nucleus (e.g., 1s² 2s² 2p⁶
for neon).
g. Energy
Energy is the ability to do work or cause change. It exists in
many forms, such as kinetic, potential, thermal, electrical, and
chemical energy.
h. Energy System
An energy system is a system or process that produces, transfers,
or transforms energy. It can involve sources (like fuel or
DUE 26 JULY 2025;100% trusted ,comprehensive and
complete reliable solution with clear explanation
QUESTION 1 [30 MARKS]
1.1 Define the following: (20)
1.1 Definitions
a. Particle
A particle is a small unit of matter. In science, it refers to the
smallest pieces that make up substances, such as atoms,
molecules, or subatomic particles like protons and electrons.
b. Atomic Model
An atomic model is a scientific representation or theory that
explains the structure and behavior of atoms. Examples include
the Bohr model and the quantum mechanical model, which show
how electrons orbit the nucleus.
c. Subatomic
Subatomic refers to the particles that make up an atom. These
include protons, neutrons, and electrons — all smaller than an
atom and responsible for its mass and charge.
, d. Protons
Protons are positively charged subatomic particles found in
the nucleus of an atom. They determine the atomic number and
identity of an element.
e. Neutrons
Neutrons are neutral subatomic particles (no charge) located
in the nucleus of an atom. They contribute to the atom’s mass
and help stabilize the nucleus.
f. Electron Configuration
Electron configuration is the arrangement of electrons in an
atom's orbitals. It shows how electrons are distributed in
energy levels and sublevels around the nucleus (e.g., 1s² 2s² 2p⁶
for neon).
g. Energy
Energy is the ability to do work or cause change. It exists in
many forms, such as kinetic, potential, thermal, electrical, and
chemical energy.
h. Energy System
An energy system is a system or process that produces, transfers,
or transforms energy. It can involve sources (like fuel or
