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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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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

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
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 7. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11078/1.1
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