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  • GETIntPhaseNS display tagshide tags

    This module is approved and included inLens: Siyavula: Natural Sciences (Gr. 4-6)
    By: Siyavula

    Review Status: Approved

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Om materiale te klassifiseer

Module by: Siyavula Uploaders. E-mail the author

NATUURWETENSKAPPE

Materie en Stowwe

Eienskappe en gebruike van materie

OPVOEDERS AFDELING

Memorandum

Voltooi die volgende tabel:

Tabel 1
EIENSKAPPE VASTE STOF VLOEISTOF GAS
VOLUME     Dit het nie ‘n vaste volume nie – die volume verander maklik. Dit ver-sprei en neem die spasie in wat beskikbaar is.
VORM   Dit neem die vorm van die houer aan.  
GEWIG     Dit het gewig.

Voorbeelde van faseverandering:

  • Vaste stof na vloeistof: ys na water
  • Vloeistof na vaste stof: water na ys
  • Vloeistof na gas: water wat kook, waterdamp
  • Gas na vloeistof: waterdamp / vog wat kondenseer teen glas, bv. motor- of kombuisvensters

LEERDER AFDELING

Inhoud

AKTIWITEIT: Om materiale te klassifiseer [LU 2.2, LU 2.3]

  • Wanneer stowwe in groepe met dieselfde eienskappe verdeel word, noem ons dit klassifikasie.
  • Wetenskaplikes klassifiseer verskillende materiale op verskillende maniere. Die bekendste manier is om dit volgens vaste stowwe, vloeistowwe en gasse te klassifiseer.

Voltooi die volgende tabel:

Tabel 2
  graphics1.png graphics2.png graphics3.png
EIENSKAPPE VASTE STOF VLOEISTOF GAS
VOLUME Dit het ‘n vaste volume. Dit het ‘n vaste volume.  
VORM Dit het ‘n vaste vorm.   Dit neem die vorm van die houer aan.
GEWIG Dit het gewig. Dit het gewig.  

‘n Stof kan van een fase na ‘n ander verander deur verhitting of afkoeling:

Figuur 1
Figuur 1 (graphics4.png)

Gee ‘n voorbeeld van die volgende soorte fase-veranderings:

  • Vaste stof na vloeistof:

_____________________________________________________________________

_____________________________________________________________________

  • Vloeistof na vaste stof:

_____________________________________________________________________

_____________________________________________________________________

  • Vloeistof na gas:

_____________________________________________________________________

_____________________________________________________________________

  • Gas na vloeistof:

_____________________________________________________________________

_____________________________________________________________________

Assessering

Leeruitkomste 2:Die leerder ken, interpreteer en pas wetenskaplike, tegnologiese en omgewingskennis toe.

Assesseringstandaard 2.2:Dit is duidelik wanneer die leerder inligting kategoriseer: kategoriseer voorwerpe en organismes in terme van twee veranderlikes.

Assesseringstandaard 2.3:Dit is duidelik wanneer die leerder inligting interpreteer.

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Definition of a lens

Lenses

A lens is a custom view of the content in the repository. You can think of it as a fancy kind of list that will let you see content through the eyes of organizations and people you trust.

What is in a lens?

Lens makers point to materials (modules and collections), creating a guide that includes their own comments and descriptive tags about the content.

Who can create a lens?

Any individual member, a community, or a respected organization.

What are tags? tag icon

Tags are descriptors added by lens makers to help label content, attaching a vocabulary that is meaningful in the context of the lens.

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