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Natuurwetenskappe

Graad 8

Materie

Module 14

Boustene van materie

Klasaktiwiteit: Eksperimente in Groepsverband

[LU 1.2, 1.3]

EKSPERIMENT 1:Beweging van deeltjies in vloeistowwe

Plaas ‘n bietjie tafelsout in ‘n proefbuis en voeg ‘n bietjie water by en skud.

1. Wat het met die kristalle gebeur?

2. Proe aan die water. Is daar nog sout in?

3. Wat sou gebeur het as jy nie die proefbuis geskud het nie?

Maak afleidings deur die volgende te voltooi:

4. Die tafelsout het onsigbaar geraak, maar die sout was nog in die

5. Die tafelsoutdeeltjies het tussen die waterdeeltjies inbeweeg en ons sê dit het

6. Water sowel as tafelsout bestaan uit

EKSPERIMENT 2:Bewegings van deeltjies in vloeistowwe

Vul die glasbekertjie met water.

Voeg nou kaliumpermanganaat of voedselkleursel stadig deur die strooitjie by – moenie roer nie.

1. Let op wat gebeur en voltooi die sketsreeks:

Maak afleidings deur die volgende te voltooi:

2. Die kaliumpermanganaat of kleursel het versprei van waar daar ..................... was na waar daar ..................... was totdat dit oral ewe veel was.

3. Deeltjies beweeg dus

4. Vloeistowwe bestaan ook uit

EKSPERIMENT 3:Beweging van deeltjies in gasse

Maak afleidings van die gassproeidemonstrasie deur die volgende te voltooi:

1. Gasdeeltjies beweeg van waar daar ........................... is na waar daar minder is totdat dit gelykmatig versprei is.

  1. Gasse bestaan dus ook uit

Assessering

LU 1

Wetenskaplike Ondersoek

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.

Dit is bewys as die leerder:

1.1 ondersoeke kan beplan;

1.2 ondersoeke kan uitvoer en data kan insamel;

1.3 data kan evalueer en bevindinge kan kommunikeer.

Memorandum

KLASAKTIWITEIT:

EKSPERIMENTE IN GROEPSVERBAND

EKSPERIMENT 1:

1. kristalle los op

2. ja

3. sou nog kristalle onder sien le

AFLEIDING:

  • water
  • opgelos
  • kleindeeltjies

EKSPERIMENT 2:

AFLEIDING:

  • Baie – min
  • Spontaan
  • deeltjies

EKSPERIMENT 3:

AFLEIDINGS:

  • Baie
  • Deeltjies

Questions & Answers

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
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
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
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
hi
Loga
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
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Source:  OpenStax, Natuurwetenskappe graad 8. OpenStax CNX. Sep 12, 2009 Download for free at http://cnx.org/content/col11049/1.1
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