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Ns Week 5 Memo

The document is a self-checker for Grade 6 Natural Sciences, focusing on key concepts related to solutes, solvents, and the process of crystallization. It includes definitions, a revision activity comparing melting and dissolving, and methods of separation such as evaporation and filtration. Additionally, it emphasizes skills in measuring volume with exercises for students to complete.

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Thalia Armstrong
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8 views1 page

Ns Week 5 Memo

The document is a self-checker for Grade 6 Natural Sciences, focusing on key concepts related to solutes, solvents, and the process of crystallization. It includes definitions, a revision activity comparing melting and dissolving, and methods of separation such as evaporation and filtration. Additionally, it emphasizes skills in measuring volume with exercises for students to complete.

Uploaded by

Thalia Armstrong
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Gr 6 NATURAL SCIENCES Term 2 2020

ANSWER SELF-CHECKER

Lesson 5.1

Topic Revision, pg 90

Science language activity

1. Solute – The substance that dissolves in a liquid.


2. Solubility – The ability of a substance to dissolve in a liquid.
3. Solvent – The liquid in which a substance dissolves.
4. Rate – The time it takes to happen.
5. Crystallisation – A dissolved substance is changing into solid crystals again when the solvent
evaporates.

Revision Activity

1. a) soluble
b) insoluble
c) insoluble

2. Melting only involves one substance (solid and liquid is the same eg. Ice melts into
water). Substances melt when heat is added.

Dissolving involves two substances. The dissolved substance is still present in the
solution, it just cannot be seen.

3. a) Evaporation
b) Filtration
c) Sieving

4. Temperature, Stirring and Grain size of solute (Any two)

5. g; d; f; c; b; e; a

Lesson 5.2

Skills focus: Measure volume, pg 78-79, exercise 7

 Complete number 1-4

5. Yes/no (Give a reasonable explanation as to why or why not)

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