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Natuurwetenskappe

Materie, meting en reaksies

Reaksies tussen soorte materie: sure en basisse

Opvoeder afdeling

Memorandum

Leerder afdeling

Inhoud

Aktiwiteit: om bekende sure en basisse en hulle funksies te kan opnoem [lu 2.1]

(A) Sure en sommige van hulle funksies

  • Soutsuur

word gebruik om stene en sement mee skoon te maak;

verlaag swembadwater se pH.

  • Salpetersuur

word gebruik in kunsmis, kleurstowwe en plofstowwe;

is teenwoordig in plastiek.

  • Swawelsuur

is waarskynlik die belangrikste suur in die land;

is ‘n effektiewe droogmiddel;

word gebruik in die voorbereiding van kunsmis, kleurstowwe, papier en gom.

  • Fosforsuur

word gebruik om koeldranke te geur;

word deur tandartse in tandsement gebruik.

  • Boorsuur

word in baie ontsmettingsmiddels gebruik;

is ‘n effektiewe kiemdoder.

  • Sitroensuur

is die suur in lemoene.

  • Oksaalsuur

is die suur in tamaties.

  • Wynsteensuur

word in bakpoeier gebruik.

  • Asetielsalisielsuur

is die suur in bekende aspirientablette

  • Askorbiensuur

is Vitamien C.

  • Melksuur

is die suur wat vorm as melk suur word;

Melksuur word ook in spiere gevorm, veral nadat strawwe oefening gedoen is (seer spiere).

(B) Basisse en sommige van hulle funksies

  • Natriumhidroksied (Ook bekend as bytsoda)

word gebruik by die maak van seep;

word gebruik as reiniger van afvoerpype.

  • Kalsiumhidroksied (Kalkwater)

teenwoordig in sagter sepe;

word aangewend in die landbou- en boubedryf.

  • Magnesiumhidroksied

is onder andere ‘n purgeermiddel (‘n purgeermiddel word gebruik om die maag te laat werk).

  • Ammoniak

is ‘n algemene, huishoudelike reiniger;

word gebruik as vlugsout omdat dit so ‘n skerp reuk het;

is ook ‘n ideale middel om vlekke mee te verwyder.

Toets:

kyk of jy minstens 8 sure en hul funksies en 3 alkalië en hul funksies op ‘n stuk papier kan neerskryf.

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
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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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