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Natuurwetenskappe

Materie, meting en reaksies

Materie en meting

Opvoeder afdeling

Memorandum

Groepwerk:

Waarneming: Die gloeiende houtsplinter slaan aan die brand omdat suurstof afgegee is.

Gevolgtrekking: Kwikoksied is ‘n verbinding wat ontbind het as gevolg van die verhitting. Dit het opgebreek in suurstof wat ‘n gas is en kwik wat ‘n metaal is.

Kwikoksied = kwik + suurstof

Leerder afdeling

Inhoud

Aktiwiteit: om die opbreek van verbindings in eenvoudiger stowwe te ondersoek [lu 1.2, lu 1.3]

Groepwerk:

Om vas te stel of kwikoksied wel ‘n verbinding is wat uit elemente bestaan, doen die volgende eksperiment in groepe. Voer die verskillende stappe noukeurig uit:

  • Gooi ‘n bietjie kwikoksied wat rooi van kleur is in ‘n proefbuis.
  • Verhit dit oor ‘n bunsenbrander of kers in ‘n goed geventileerde vertrek.
  • Wag totdat die kwikoksied swart word en fyn kwikdruppeltjies aan die koeler kant van die proefbuis verskyn.
  • Steek ‘n gloeiende houtsplinter bo in die proefbuis in. ‘n Reaksie ontstaan.

Waarneming: _________________________________________________________

____________________________________________________________________

____________________________________________________________________

Gevolgtrekking: __________________________________________________________

____________________________________________________________________

____________________________________________________________________

Assessering

PUNT VLAK SAMEWERKENDELEERVAARDIGHEDE WAARDES EN HOUDINGS INHOUD
1-34% 1 Elkeen leer op sy/haar eie. Deelname in die groep is afbrekend, bv. oorheersend. Geen agting vir ander. Afbrekende, interpersoonlike verhoudings (negatief aktief). Kan nie sinvolle waarnemings en gevolgtrekkings maak nie.
35-39 % 2 Dra nie tot die groep by nie of vorm nie ‘n betekenisvolle deel daarvan nie. Geen agting vir ander, maar dit beïnvloed nie interpersoonlike verhoudings nie (negatief passief). Waarnemings en gevolgtrekkings redelik goed.
40-69% 3 Erken as lid van die groep. Sensitief vir ander se behoeftes. Agting vir ander en begrip vir ander standpunte, maar dit beïnvloed nie interpersoonlike verhoudings nie (positief passief). Waarnemings en gevolgtrekkings goed.
70-100% 4 Skep geleentheid vir ander se bydraes. Maak altyd ‘n positiewe bydrae tot die groeptaak. Agting vir ander en begrip vir ander standpunte. Dit beïnvloed interpersoonlike verhoudings positief (positief aktief). Waarnemings en gevolgtrekkings uitstekend.

Assessering

Leeruitkomste 1: Die leerder 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 1.2: Dit is duidelik wanneer die leerder ondersoeke uitvoer en data versamel: organiseer en gebruik apparaat/toerusting of bronne om inligting in te win en te noteer;

Assesseringstandaard 1.3: Dit is duidelik wanneer die leerder data evalueer en bevindings kommunikeer: veralgemeen in terme van relevante aspekte en beskryf hoe die data die veralgemening onderskryf.

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
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
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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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