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To explain the three basic forms of matter in terms of particle theory

Module by: Siyavula Uploaders. E-mail the author

NATURAL SCIENCES

Matter, measuring and reactions

EDUCATOR SECTION

Memorandum

Wright brothers:

Is it brittle or hard and tough?
Can it withstand a lot of pressure?
Does it conduct electricity?
Is it heat-resistant?
Is it flame-retardant?
Will it rust?
Is it attractive?
Is it light or heavy?
Will it form smooth surfaces that offer little resistance?
Is it a good heat insulator?

Gold: It is not too hard, but has a long lifetime, because it does not react with other materials; and it has an attractive appearance!

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Activity: To discuss a substance in terms of the characteristics of matter [LO 2.3]

The basic properties of matter always remain the same and can be observed:

appearance (colour, texture, smell, fragrance and form)
hardness
mass
solubility
flexibility
strength
whether it is acidic, alkaline or salty

Choosing a suitable substance:

When a material is required for a specific purpose, it has to be selected according to the function that it has to fulfil. The properties of the substance has to be borne in mind, for example:

whether it is flexible;
whether it is strong enough;
whether and how it reacts with other substances.

Suggest questions about the properties of materials that the Wright brothers might have asked when they were looking for suitable materials for the first aeroplane?

_____________________________________________________________________

Why is gold regarded as a suitable material for making jewellery?

_____________________________________________________________________

Assessment

Learning Outcome 2: The learner will know and be able to interpret and apply scientific, technological and environmental knowledge.

Assessment Standard 2.3: We know this when the learner interprets information by identifying key ideas in text, finding patterns in recorded data, and making inferences from information in various forms (e.g. pictures, diagrams, text).

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This work is licensed by Siyavula Uploaders under a Creative Commons Attribution License (CC-BY 3.0), and is an Open Educational Resource.

Last edited by Siyavula Uploaders on Mar 16, 2009 4:58 am GMT-5.

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To explain the three basic forms of matter in terms of particle theory

NATURAL SCIENCES

Matter, measuring and reactions

EDUCATOR SECTION

Memorandum

LEANER SECTION

Content

Activity: To discuss a substance in terms of the characteristics of matter [LO 2.3]

Assessment

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