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Natuurwetenskappe

Materie, meting en reaksies

Reaksies tussen soorte materie: sure en basisse

Opvoeder afdeling

Memorandum

Stap 1: Dit het blou geword, want koeksoda is ‘n basis

Stap 2: Nee

Stap 3: Dit het ligter geword

Stap 4: Dit word baie ligter en lemmetjiegroen

WAARNEMING:

  • Neutrale

Leerder afdeling

Inhoud

Aktiwiteit: om vas te stel wat gebeur as ‘n suur en alkali gemeng word [lu 1.2, lu 1.3]

Ons het reeds ontdek dat ‘n neutrale oplossing nie ‘n suur of ‘n basis is nie.

Wat sal gebeur wanneer ons ‘n suur en ‘n basis meng? Kom ons vind uit!

  • Gebruik ‘n BTB-oplossing as indikator
  • Ander benodigdhede:

100 ml witasyn

150 ml koeksoda-oplossing

STAP 1: Voeg ‘n paar druppels van die koeksoda-oplossing by die BTB-indikator.

Wat neem jy waar?

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

STAP 2: Voeg die helfte van die asyn by die koeksoda-oplossing

Is die oplossing nou neutraal?

_____________________________________________________________________

_____________________________________________________________________

STAP 3: Om dit vas te stel, voeg druppels van die mengsel by die BTB-indikator.

Wat neem jy waar?

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

STAP 4: Indien geen verandering plaasvind nie, voeg die helfte van die oorblywende asyn by die koeksoda-oplossing en herhaal stap 3.

STAP 5: Toets weer die oplossing en herhaal stap 3 en 4 totdat ‘n verandering waargeneem word.

Wat neem jy waar?

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

WAARNEMING:

  • Saam het die asyn en koeksoda ‘n ________________________ oplossing gemaak. Dit is nie ‘n suur of ‘n basis nie.

Die proses waartydens sure deur basisse vernietig word of waartydens basisse deur sure vernietig word, word NEUTRALISERING genoem.

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

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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