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Exam (elaborations) NST1501 Assignment 3 (COMPLETE ANSWERS) 2024 • Course • Natural Science and Technology for Classroom I (NST1501) • Institution • University Of South Africa (Unisa) • Book • Study and Master Natural Sciences and Technology Grade 6 CAPS €2,59
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Exam (elaborations) NST1501 Assignment 3 (COMPLETE ANSWERS) 2024 • Course • Natural Science and Technology for Classroom I (NST1501) • Institution • University Of South Africa (Unisa) • Book • Study and Master Natural Sciences and Technology Grade 6 CAPS
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NST1501
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Study & Master Natural Sciences and Technology Teacher\'s Guide Teacher\'s Guide
Exam (elaborations)
NST1501 Assignment 3 (COMPLETE ANSWERS) 2024
• Course
• Natural Science and Technology for Classroom I (NST1501)
• Institution
• University Of South Africa (Unisa)
• Book
• Study and Master Natural Sciences and Technology Grade 6 CAPS Teacher's Guide
NST1501 ...
TMS3728 Assignment 4 (COMPLETE ANSWERS) 2024 - DUE 8 July 2024 Course Teaching Natural Sciences (TMS3728) Institution University Of South Africa (Unisa) Book Study & Master Natural Sciences and Techno...
TMS3728 Assignment 4 (COMPLETE ANSWERS) 2024 - DUE 8 July 2024 Course Teaching Natural Sciences (TMS3728) Institution University Of South Africa (Unisa) Book Study & Master Natural Sciences and Techno...
TMS3728 Assignment 4 (COMPLETE ANSWERS) 2024 - DUE 8 July 2024 ;100% TRUSTED workings, explanations and solutions.
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, Exam (elaborations)
NST1501 Assignment 3 (COMPLETE ANSWERS) 2024
Course
Natural Science and Technology for Classroom I (NST1501)
Institution
University Of South Africa (Unisa)
Book
Study and Master Natural Sciences and Technology Grade 6 CAPS
Teacher\'s Guide
NST1501 Assignment 3 (COMPLETE ANSWERS) 2024; 100% TRUSTED
workings, explanations and solutions. for assistance call @+254756432.........
QUESTION 1 1.1 Define the following terms: 1.1.1 Solvent
In chemistry, a solvent is a substance capable of dissolving another substance to form a solution.
Solvents are typically liquids, but they can also be gases or solids under certain conditions. They are
commonly used to dissolve solutes such as salts, gases, or solids to create solutions. Solvents play a
crucial role in various chemical processes, including extraction, purification, and as a medium for
chemical reactions. Examples of solvents include water, ethanol, acetone, and hexane, each chosen
based on their ability to dissolve specific types of substances.
1.1.2 Matter (4)
Matter refers to anything that has mass and occupies space. It is the substance that makes up all
physical objects and can exist in various states, including solid, liquid, and gas. Matter is
composed of atoms and molecules, which are the fundamental building blocks of all materials in
the universe. The study of matter encompasses its properties, composition, behavior under
different conditions (such as temperature and pressure), and its interactions with energy and
other substances. Matter can undergo physical and chemical changes, transforming from one
state to another or combining with other substances through chemical reactions.
1.2 Give an example of a heterogenous mixture. (2)
An example of a heterogeneous mixture is granite. Granite is a natural rock composed of various
minerals such as quartz, feldspar, and mica. These minerals are unevenly distributed throughout
, the rock, creating a visibly different composition in different parts of the granite. When you look
closely at granite, you can see different colored grains and crystals of these minerals, making it a
heterogeneous mixture.
1.3 Identify 2 different ways of separating homogenous mixtures (4)
Two different ways of separating homogeneous mixtures are:
1. Filtration:
o Description: Filtration is a method used to separate solid particles from a liquid
or gas using a filter medium that allows the liquid or gas to pass through while
retaining the solid particles.
o Example: Separating sand from water is a common application of filtration. The
mixture is poured through a filter paper or sieve, where the sand particles are
trapped while the water passes through.
2. Distillation:
o Description: Distillation involves heating a homogeneous mixture to evaporate a
volatile component (liquid) and then condensing the vapor back into liquid form.
This process separates substances based on differences in boiling points.
o Example: Purifying water through distillation is an example where water is
heated to form steam, which is then condensed back into pure liquid water,
leaving behind impurities and salts in the original mixture.
These methods are effective for separating homogeneous mixtures based on physical properties
such as particle size (filtration) or boiling points (distillation), allowing for the isolation of
components in their pure form.
1.4 State the three different states of matter. (3)
The three different states of matter are:
1. Solid: Solids have a definite shape and volume. The particles in a solid are closely
packed together and vibrate in place. Examples include ice, wood, and metal.
2. Liquid: Liquids have a definite volume but take the shape of their container. The
particles in a liquid are close together but can move around each other. Examples include
water, milk, and oil.
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