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Natuurwetenskappe

Graad 4

Materie en stowwe

Module 50

Materie

Aktiwiteit:

Om die eienskappe van materie te ontdek en die wonder daarvan te beleef

[lu 1.1.2, 2.2.1]

Kom ons speel die speletjie:

I see with my little eye…..

en beskryf dan die ding wat jy sien deur die volgende dinge te sê:

Hoe dit voel: hard of sag, ens.

Of ‘n mens dit kan eet, drink

Of ‘n mens daarmee kan speel, ens.

As jou maats na vyf raaiskote nog nie kan raai wat dit is nie, wen jy ‘n punt. As iemand dit reg raai, kry daardie leerder ‘n punt.

Wat is materie?

Alles waaraan jy kan raak, is materie.

Materie het massa.

P robeer die volgende (1):

Tel jou liniaal op. Hoe voel dit?

Tel nou jou maat op. Hoe voel dit? Wat was die moeilikste om op te tel?

My bevinding is:

Materie beslaan ruimte.

Probeer die volgende (2):

Neem ‘n vaas met water.

Sit blomme daarin. Wat gebeur met die water?

Hoekom dink jy gebeur dit?

My bevinding is:

Neem ou tydskrifte en knip alle prentjies wat op die eerste 10 bladsye is, uit. Dit behoort lewende en nie-lewende materie in te sluit. Klassifiseer nou die prentjies wat jy uitgeknip het in lewende en nie-lewende materie. Lys eers die eienskappe wat lewende materie moet hê voordat jy begin uitknip.

Assessering

LEERUITKOMS 1: WETENSKAPLIKE ONDERSOEK

Die l eerder is in staat om met selfvertroue op weetgierigheid oor natuurlike verskynsels te reageer, en om binne die konteks van wetenskap, tegnologie en die omgewing verbande te ondersoek en probleme op te los.

Assesseringstandaard

Dis duidelik wanneer die leerder

1.1 ondersoeke beplan, bv.:

1.1.2 praat oor persoonlike ervarings en lig aspekte uit wat verband hou met wetenskap en tegnologie.

LEERUITKOMS 2: KONSTRUKSIE VAN WETENSKAPKENNIS Die leerder ken, interpreteer en pas wetenskaplike, tegnologiese en omgewings- kennis toe.

Assesseringstandaard

Dis duidelik wanneer die leerder

2.2 inligting kategoriseer, bv.:

2.2.1 volg instruksies om diere in groepe van dié met twee bene, met vier bene en met meer as vier bene te sorteer.

Memorandum

Probeer die volgende (1)

  • Tel jou liniaal op. Hoe voel dit? Tel nou jou maat op. Hoe voel dit? Wat was die moeilikste om op te tel? Antwoord:
  • Die liniaal is ligter as die maat, maar albei het massa.

Probeer die volgende (2)

  • Neem ‘n vaas met water. Sit blomme daarin. Wat gebeur met die water? Hoekom dink jy gebeur dit?Antwoord:
  • Die water styg in die vaas. Die blomme en die water is materie. Altwee gebruik ruimte.

Lys eers die eienskappe wat lewende materie moet hê, voordat jy begin uitknip.

  • Beweging: dit moet kan beweeg
  • Asemhaling: dit moet asem kan haal
  • Voortplanting: dit moet kan voortplant
  • Voedsel inneem: dit moet kan eet en drink
  • Uitskeiding: dit moet ongewenste stowwe uit die liggaam kan uitskei, bv. sweet

Questions & Answers

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Natuurwetenskappe graad 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11097/1.1
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