Exam (elaborations)
NST1501 Assignment 3 (COMPLETE ANSWERS) 2024
- Course
- NST1501
- Institution
- University Of South Africa
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NST1501Assignment 3
(COMPLETE
ANSWERS)
2024
CONTACT: biwottcornelius@gmail.com
, 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 Change of state from liquid
to solid 1.5.2 Change of state from gas to liquid 1.5.3 Change of state from
solid to gas 1.5.4 Change of state from liquid to gas 1.5.5 Change of state
from gas to solid 1.5.6 Change of state from solid to liquid (6) 1.6 Give 5
characteristics from the online study guide, of a good lesson plan (10) 1.7
Explain why sublimation might be a difficult concept to teach. (5) 1.8 In which
term in the intermediate phase, is the matter and materials strand taught? (2)
1.9 List any 4 topics taught under the matter and material phase in the
intermediate phase. (4) [40]
Certainly! Let's break down each part of your question:
1.1 Define the following terms: 1.1.1 Solvent: A solvent is a substance in which another
substance (called a solute) is dissolved to form a solution. It is usually present in greater quantity
than the solute. 1.1.2 Matter: Matter is anything that has mass and occupies space.
1.2 Give an example of a heterogeneous mixture: An example of a heterogeneous mixture is a
salad, where different vegetables (lettuce, tomatoes, cucumbers) are mixed together but can be
distinguished from one another.
1.3 Identify 2 different ways of separating homogeneous mixtures: Two ways of separating
homogeneous mixtures are:
Filtration: Used to separate solids from liquids or gases using a filter medium that allows
the liquid or gas to pass through but retains the solid.
Distillation: Used to separate components of a liquid mixture based on differences in
boiling points.
1.4 State the three different states of matter: The three states of matter are:
Solid: Has a definite shape and volume.
Liquid: Has a definite volume but takes the shape of its container.
Gas: Takes both the shape and volume of its container.
1.5 Identify the process: 1.5.1 Change of state from liquid to solid: Freezing 1.5.2 Change of
state from gas to liquid: Condensation 1.5.3 Change of state from solid to gas: Sublimation
1.5.4 Change of state from liquid to gas: Evaporation 1.5.5 Change of state from gas to solid:
Deposition 1.5.6 Change of state from solid to liquid: Melting
1.6 Give 5 characteristics from the online study guide, of a good lesson plan: Five characteristics
of a good lesson plan typically include:
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