NST2601 Assignment 3 2025
Unique Number:
Due date: 26 July 2025
QUESTION 1
1.1 Define the following
a. Particle:
A particle is a tiny piece of matter. It can be something very small like a grain of dust or even
smaller, like an atom or part of an atom. In science, we use the word particle to talk about
objects that have properties such as mass and volume, even if they are too small to see. In
some subjects like chemistry, particles can mean atoms or molecules. In physics, they can
also mean smaller things like electrons.
b. Atomic model:
An atomic model is a drawing or idea that helps us understand what an atom looks like and
how it works. Scientists use these models to explain how atoms are built and how they
behave. There are different models that were made over time, such as Dalton’s solid sphere
model, Thomson’s plum pudding model, Rutherford’s nuclear model, Bohr’s model with
DISCLAIMER & TERMS OF USE
Educational Aid: These study notes are intended to be used as educational resources and should not be seen as a
replacement for individual research, critical analysis, or professional consultation. Students are encouraged to perform
their own research and seek advice from their instructors or academic advisors for specific assignment guidelines.
Personal Responsibility: While every effort has been made to ensure the accuracy and reliability of the information in
these study notes, the seller does not guarantee the completeness or correctness of all content. The buyer is
responsible for verifying the accuracy of the information and exercising their own judgment when applying it to their
assignments.
Academic Integrity: It is essential for students to maintain academic integrity and follow their institution's policies
regarding plagiarism, citation, and referencing. These study notes should be used as learning tools and sources of
inspiration. Any direct reproduction of the content without proper citation and acknowledgment may be considered
academic misconduct.
Limited Liability: The seller shall not be liable for any direct or indirect damages, losses, or consequences arising from
the use of these notes. This includes, but is not limited to, poor academic performance, penalties, or any other negative
consequences resulting from the application or misuse of the information provided.
, For additional support +27 81 278 3372
QUESTION 1
1.1 Define the following
a. Particle:
A particle is a tiny piece of matter. It can be something very small like a grain of dust
or even smaller, like an atom or part of an atom. In science, we use the word particle
to talk about objects that have properties such as mass and volume, even if they are
too small to see. In some subjects like chemistry, particles can mean atoms or
molecules. In physics, they can also mean smaller things like electrons.
b. Atomic model:
An atomic model is a drawing or idea that helps us understand what an atom looks
like and how it works. Scientists use these models to explain how atoms are built
and how they behave. There are different models that were made over time, such as
Dalton’s solid sphere model, Thomson’s plum pudding model, Rutherford’s nuclear
model, Bohr’s model with electrons in orbits, and the current quantum model. These
models help us learn more about atoms even though we cannot see them.
c. Subatomic:
The word subatomic means smaller than an atom. Subatomic particles are the tiny
parts that make up atoms. The three main ones are protons, neutrons, and
electrons. These are the building blocks that combine to form atoms and everything
in the universe.
f. Electron configuration
Electron configuration shows how electrons are arranged in an atom. It tells us which
energy levels and orbitals the electrons are in. This arrangement influences the
chemical behaviour of the atom and how it bonds with other atoms. The rules that
guide this arrangement are the Aufbau principle, Hund’s rule, and the Pauli exclusion
principle.
Unique Number:
Due date: 26 July 2025
QUESTION 1
1.1 Define the following
a. Particle:
A particle is a tiny piece of matter. It can be something very small like a grain of dust or even
smaller, like an atom or part of an atom. In science, we use the word particle to talk about
objects that have properties such as mass and volume, even if they are too small to see. In
some subjects like chemistry, particles can mean atoms or molecules. In physics, they can
also mean smaller things like electrons.
b. Atomic model:
An atomic model is a drawing or idea that helps us understand what an atom looks like and
how it works. Scientists use these models to explain how atoms are built and how they
behave. There are different models that were made over time, such as Dalton’s solid sphere
model, Thomson’s plum pudding model, Rutherford’s nuclear model, Bohr’s model with
DISCLAIMER & TERMS OF USE
Educational Aid: These study notes are intended to be used as educational resources and should not be seen as a
replacement for individual research, critical analysis, or professional consultation. Students are encouraged to perform
their own research and seek advice from their instructors or academic advisors for specific assignment guidelines.
Personal Responsibility: While every effort has been made to ensure the accuracy and reliability of the information in
these study notes, the seller does not guarantee the completeness or correctness of all content. The buyer is
responsible for verifying the accuracy of the information and exercising their own judgment when applying it to their
assignments.
Academic Integrity: It is essential for students to maintain academic integrity and follow their institution's policies
regarding plagiarism, citation, and referencing. These study notes should be used as learning tools and sources of
inspiration. Any direct reproduction of the content without proper citation and acknowledgment may be considered
academic misconduct.
Limited Liability: The seller shall not be liable for any direct or indirect damages, losses, or consequences arising from
the use of these notes. This includes, but is not limited to, poor academic performance, penalties, or any other negative
consequences resulting from the application or misuse of the information provided.
, For additional support +27 81 278 3372
QUESTION 1
1.1 Define the following
a. Particle:
A particle is a tiny piece of matter. It can be something very small like a grain of dust
or even smaller, like an atom or part of an atom. In science, we use the word particle
to talk about objects that have properties such as mass and volume, even if they are
too small to see. In some subjects like chemistry, particles can mean atoms or
molecules. In physics, they can also mean smaller things like electrons.
b. Atomic model:
An atomic model is a drawing or idea that helps us understand what an atom looks
like and how it works. Scientists use these models to explain how atoms are built
and how they behave. There are different models that were made over time, such as
Dalton’s solid sphere model, Thomson’s plum pudding model, Rutherford’s nuclear
model, Bohr’s model with electrons in orbits, and the current quantum model. These
models help us learn more about atoms even though we cannot see them.
c. Subatomic:
The word subatomic means smaller than an atom. Subatomic particles are the tiny
parts that make up atoms. The three main ones are protons, neutrons, and
electrons. These are the building blocks that combine to form atoms and everything
in the universe.
f. Electron configuration
Electron configuration shows how electrons are arranged in an atom. It tells us which
energy levels and orbitals the electrons are in. This arrangement influences the
chemical behaviour of the atom and how it bonds with other atoms. The rules that
guide this arrangement are the Aufbau principle, Hund’s rule, and the Pauli exclusion
principle.
