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Natuurwetenskappe

Materie, meting en reaksies

Materie en meting

Opvoeder afdeling

Memorandum

Opdrag 1:

1. Materie is die boustof waarvan alle dinge gemaak is.

2. Natuurlik: staal; diamante; koper; graniet; katoen; yster

Sinteties: plastiek; glas; seep; nylon; rubber

Definisies: Atoom: Die kleinste deeltjie waaruit alle materie opgebou is.

Element: ‘n Stof wat uit slegs een soort atoom bestaan.

Molekule: ‘n Groepie atome wat saam ‘n eenheid vorm wat die kenmerke van die betrokke stof toon.

Verbinding: ‘n Stof wat uit twee of meer atome bestaan en in ander stowwe gedeel kan word.

Leerder afdeling

Inhoud

Skeikunde vorm ‘n onderafdeling van die leerarea Natuurwetenskappe. Skeikunde is die wetenskap wat handel oor die samestelling en kenmerke van stowwe (materie). Dit staan ook bekend as Chemie en ons almal beoefen dit elke dag. Indien jy in die oggend vir jouself koffie maak of springmielies skiet, is jy besig om chemie te gebruik.

Aktiwiteit: om die terme materie, atome, molekule, elemente en verbindings te kan beskryf [lu 2.2]

1. Wat is materie?

Materie is die wetenskaplike naam vir die boustof waarvan alle dinge gemaak is. Alle voorwerpe op die aarde is van materie gemaak, bv. die boek waaruit jy lees, die tafel waarop jy skryf of die lug wat jy inasem. Dis egter nie net die nie-lewende dinge wat van materie gemaak is nie, maar ook die lewende dinge soos plante en diere.

Opdrag 1:

1. Skryf nou in jou eie woorde neer wat materie is:

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2. Alhoewel baie nie-lewende stowwe natuurlik voorkom, moet dit eers gesuiwer of verwerk word voordat dit gebruik kan word. Voorbeelde hiervan is yster wat eers van ystererts geskei moet word en olie wat eers geraffineer moet word. Ander stowwe word weer gemaak deur verskillende grondstowwe, bv. katoen, hout en wol te meng en te behandel. Hierdie stowwe staan as sintetiese stowwe bekend.

Klassifiseer die volgende stowwe as natuurlik of sinteties. Omsirkel die natuurlike stowwe en onderstreep die sintetiese stowwe.

staal; plastiek; glas; diamante;
koper; seep; graniet; nylon;
rubber; goud; suurstof; yster;
sout; asyn; leer; koffie

Atome, molekules, elemente en verbindings

Alle materie in die wêreld bestaan uit baie klein deeltjies of partikels. Dit word atome genoem; dit is die kleinste deeltjies waaruit materie opgebou is en kan slegs mikroskopies waargeneem word. ‘n Hoeveelheid atome word saamgevoeg en vorm ‘n molekule net soos ‘n klomp bakstene saam ‘n muur vorm.

‘n Element is ‘n stof wat uit slegs een soort atoom bestaan. ‘n Element kan dus nie in enigiets anders verdeel word nie. ‘n Verbinding is ‘n stof wat uit twee of meer soorte atome bestaan en in ander stowwe gedeel kan word. Sommige van hierdie stowwe kan elemente wees . Water is die algemeenste verbinding wat ons ken. Water bestaan uit die elemente waterstof en suurstof.

Die verskil tussen elemente en verbindings kan ook gesien word as die verskil tussen ‘n brood en sy bestanddele. Die “elemente” is die bestanddele van die brood, nl. suurdeeg, eiers, water, meel en bakpoeier. Die “verbinding” is die brood wat van hierdie bestanddele gebak is.

Beskryf die volgende terme in jou eie woorde:

Atome: ______________________________________________________________

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Element: _____________________________________________________________________

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Molekule: ____________________________________________________________

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_____________________________________________________________________

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Verbinding: __________________________________________________________

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_____________________________________________________________________

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Assessering

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

Assesseringstandaard 2.2: Dit is duidelik wanneer die leerder inligting kan kategoriseer: vergelyk kenmerke van verskillende kategorieë voorwerpe, organismes en gebeurtenisse.

Questions & Answers

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
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
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
How can I make nanorobot?
Lily
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
how can I make nanorobot?
Lily
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
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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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