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3.6 Om ‘n stof in terme van die kenmerke van materie te kan bespreek

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Natuurwetenskappe

Materie, meting en reaksies

Materie en meting

Opvoeder afdeling

Memorandum

Wright broers:

  • Is dit broos of hard en taai?
  • Kan dit baie druk weerstaan?
  • Kan dit elektrisiteit gelei?
  • Is dit hitte-bestand?
  • Is dit vuurwerend?
  • Sal dit roes?
  • Is dit aantreklik?
  • Is dit lig of swaar?
  • Sal dit ‘n gladde oppervlakte vorm wat min weerstand bied?
  • Is dit ‘n goeie hitte-isoleerder?

Goud : dit is nie te hard nie, maar het ‘n baie lang lewensduur omdat dit nie met ander stowwe reageer nie; en dit vertoon mooi!

Leerder afdeling

Inhoud

Aktiwiteit: om ‘n stof in terme van die kenmerke van materie te kan bespreek [lu 2.3]

Die basiese eienskappe van materie bly altyd dieselfde en kan waargeneem word:

  • voorkoms (kleur, tekstuur, reuk, geur en vorm)
  • hardheid
  • massa
  • oplosbaarheid
  • buigbaarheid
  • sterkte
  • of dit ‘n suur, alkali of sout is

Keuse van geskikte stof:

Wanneer ‘n stof vir ‘n sekere doel gebruik moet word, sal dit gekies word na aanleiding van die funksie wat dit moet verrig. Die eienskappe van die stof sal altyd in gedagte gehou moet word, byvoorbeeld:

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

Watter vrae oor die eienskappe van materie sou die Wright-broers gevra het toe hulle ‘n geskikte stof vir hul eerste vliegtuig moes kies?

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Hoekom is goud ‘n geskikte stof vir die maak van juwele?

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Assessering

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

Assesseringstandaard 2.3: Dit is duidelik wanneer die leerder inligting interpreteer: identifiseer kernidees in die teks, vind patrone in aangetekende data en maak gevolgtrekkings uit inligting in verskeie vorme (prente, diagramme, ens.).

Questions & Answers

Discuss the differences between taste and flavor, including how other sensory inputs contribute to our  perception of flavor.
John Reply
taste refers to your understanding of the flavor . while flavor one The other hand is refers to sort of just a blend things.
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While taste primarily relies on our taste buds, flavor involves a complex interplay between taste and aroma
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to drain extracellular fluid all over the body.
asegid
The lymphatic system plays several crucial roles in the human body, functioning as a key component of the immune system and contributing to the maintenance of fluid balance. Its main functions include: 1. Immune Response: The lymphatic system produces and transports lymphocytes, which are a type of
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Anatomy is the identification and description of the structures of living things
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Anatomy is the study of the structure of the body, while physiology is the study of the function of the body. Anatomy looks at the body's organs and systems, while physiology looks at how those organs and systems work together to keep the body functioning.
AI-Robot
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Enzymes are proteins that help speed up chemical reactions in our bodies. Enzymes are essential for digestion, liver function and much more. Too much or too little of a certain enzyme can cause health problems
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it is because of the enzyme that the stomach produce that help the stomach from the damaging effect of HCL
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37 degrees selcius
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the normal temperature is 37°c or 98.6 °Fahrenheit is important for maintaining the homeostasis in the body the body regular this temperature through the process called thermoregulation which involves brain skin muscle and other organ working together to maintain stable internal temperature
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Wulku
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anaemia is the decrease in RBC count hemoglobin count and PVC count
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Organ Systems Of The Human Body (Continued) Organ Systems Of The Human Body (Continued)
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Source:  OpenStax, Natuurwetenskappe graad 7. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11078/1.1
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