Natural Sciences and Technology for Classroom 1 (NST1501)
Exam (elaborations)
NST1501 Assignment 3 2024 | Due 28 June 2024
12 views 0 purchase
Module
Natural Sciences and Technology for Classroom 1 (NST1501)
Institution
University Of South Africa (Unisa)
QUESTION 1
1.1
Define the following terms:
1.1.1 Solvent
1.1.2 Matter
(4)
1.2
Give an example of a heterogenous mixture.
(2)
1.3
Identify 2 different ways of separating homogenous mixtures
(4)
1.4
State the three different states of matter.
(3)
1.5
Identify the process:
1.5.1 Chang...
Natural Sciences and Technology for Classroom 1 (NST1501)
All documents for this subject (2)
Seller
Follow
Aimark94
Reviews received
Content preview
, PLEASE USE THIS DOCUMENT AS A GUIDE TO ANSWER YOUR ASSIGNMENT
Please note that the author of this document will not responsibility for any plagiarizing you
commit.
Question 1
1.1. Define the following terms:
1.1.1. Solvent
A solvent is a substance capable of dissolving other substances to form a solution. It is typically the
component of a solution present in the largest amount. Solvents are commonly used in various
processes, such as chemical reactions, cleaning, and extraction, to dissolve and disperse other
substances. (Tutorial Letter - Page 21)
1.1.2. Matter
Matter refers to any physical substance that occupies space and has mass. It encompasses everything
around us, including solids, liquids, gases, and plasma. Matter is composed of atoms, which can
combine to form molecules and compounds. It is the fundamental building block of the universe and
is subject to various physical and chemical properties. (Study Guide - Page 7)
1.2. Give an example of a heterogeneous mixture.
Water and sand. In this case, the sand particles are suspended in the water but do not dissolve,
leading to a non-uniform appearance. This type of mixture can be separated through methods like
filtration. (Tutorial Letter - Page 21)
[OR]
Oil and water. When oil and water are combined, they do not mix uniformly, and the oil forms
distinct droplets within the water. This makes it a heterogeneous mixture, and it can be separated
using techniques like decantation or centrifugation.
1.3. Identify 2 different ways of separating homogenous mixtures.
Distillation is a process that separates the components of a liquid mixture based on differences in
their boiling points. When the mixture is heated, the component with the lower boiling point
vaporizes first, and then it is condensed back into a liquid, resulting in the separation of the
components.
Chromatography is a technique used to separate the components of a mixture based on their ability to
move through a medium. The mixture is dissolved in a fluid and then passed through a stationary
phase. The components move at different rates, leading to their separation.
(Study Guide - Page 10-11)
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Aimark94. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £2.25. You're not tied to anything after your purchase.
