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Natuurwetenskappe

Materie, meting en reaksies

Materie en meting

Opvoeder afdeling

Memorandum

Groepwerk:

Waarneming: Die gloeiende houtsplinter slaan aan die brand omdat suurstof afgegee is.

Gevolgtrekking: Kwikoksied is ‘n verbinding wat ontbind het as gevolg van die verhitting. Dit het opgebreek in suurstof wat ‘n gas is en kwik wat ‘n metaal is.

Kwikoksied = kwik + suurstof

Leerder afdeling

Inhoud

Aktiwiteit: om die opbreek van verbindings in eenvoudiger stowwe te ondersoek [lu 1.2, lu 1.3]

Groepwerk:

Om vas te stel of kwikoksied wel ‘n verbinding is wat uit elemente bestaan, doen die volgende eksperiment in groepe. Voer die verskillende stappe noukeurig uit:

  • Gooi ‘n bietjie kwikoksied wat rooi van kleur is in ‘n proefbuis.
  • Verhit dit oor ‘n bunsenbrander of kers in ‘n goed geventileerde vertrek.
  • Wag totdat die kwikoksied swart word en fyn kwikdruppeltjies aan die koeler kant van die proefbuis verskyn.
  • Steek ‘n gloeiende houtsplinter bo in die proefbuis in. ‘n Reaksie ontstaan.

Waarneming: _________________________________________________________

____________________________________________________________________

____________________________________________________________________

Gevolgtrekking: __________________________________________________________

____________________________________________________________________

____________________________________________________________________

Assessering

PUNT VLAK SAMEWERKENDELEERVAARDIGHEDE WAARDES EN HOUDINGS INHOUD
1-34% 1 Elkeen leer op sy/haar eie. Deelname in die groep is afbrekend, bv. oorheersend. Geen agting vir ander. Afbrekende, interpersoonlike verhoudings (negatief aktief). Kan nie sinvolle waarnemings en gevolgtrekkings maak nie.
35-39 % 2 Dra nie tot die groep by nie of vorm nie ‘n betekenisvolle deel daarvan nie. Geen agting vir ander, maar dit beïnvloed nie interpersoonlike verhoudings nie (negatief passief). Waarnemings en gevolgtrekkings redelik goed.
40-69% 3 Erken as lid van die groep. Sensitief vir ander se behoeftes. Agting vir ander en begrip vir ander standpunte, maar dit beïnvloed nie interpersoonlike verhoudings nie (positief passief). Waarnemings en gevolgtrekkings goed.
70-100% 4 Skep geleentheid vir ander se bydraes. Maak altyd ‘n positiewe bydrae tot die groeptaak. Agting vir ander en begrip vir ander standpunte. Dit beïnvloed interpersoonlike verhoudings positief (positief aktief). Waarnemings en gevolgtrekkings uitstekend.

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

what is biology
Hajah Reply
the study of living organisms and their interactions with one another and their environments
AI-Robot
what is biology
Victoria Reply
HOW CAN MAN ORGAN FUNCTION
Alfred Reply
the diagram of the digestive system
Assiatu Reply
allimentary cannel
Ogenrwot
How does twins formed
William Reply
They formed in two ways first when one sperm and one egg are splited by mitosis or two sperm and two eggs join together
Oluwatobi
what is genetics
Josephine Reply
Genetics is the study of heredity
Misack
how does twins formed?
Misack
What is manual
Hassan Reply
discuss biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles
Joseph Reply
what is biology
Yousuf Reply
the study of living organisms and their interactions with one another and their environment.
Wine
discuss the biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles in an essay form
Joseph Reply
what is the blood cells
Shaker Reply
list any five characteristics of the blood cells
Shaker
lack electricity and its more savely than electronic microscope because its naturally by using of light
Abdullahi Reply
advantage of electronic microscope is easily and clearly while disadvantage is dangerous because its electronic. advantage of light microscope is savely and naturally by sun while disadvantage is not easily,means its not sharp and not clear
Abdullahi
cell theory state that every organisms composed of one or more cell,cell is the basic unit of life
Abdullahi
is like gone fail us
DENG
cells is the basic structure and functions of all living things
Ramadan
What is classification
ISCONT Reply
is organisms that are similar into groups called tara
Yamosa
in what situation (s) would be the use of a scanning electron microscope be ideal and why?
Kenna Reply
A scanning electron microscope (SEM) is ideal for situations requiring high-resolution imaging of surfaces. It is commonly used in materials science, biology, and geology to examine the topography and composition of samples at a nanoscale level. SEM is particularly useful for studying fine details,
Hilary
cell is the building block of life.
Condoleezza 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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