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Natuurwetenskappe

Materie, meting en reaksies

Materie en meting

Opvoeder afdeling

Memorandum

  • Die binnemiddellyn is die middellyn van die silinder aan die binnekant sodat jy bv. kan bepaal hoeveel inhoud dit kan neem.
  • Die buitemiddellyn is die middellyn van die silinder aan die buitekant sodat jy bv. kan bepaal hoeveel ruimte dit gaan beslaan.
  • Omtrek van blikkie se kromvlak: Neem gare en plaas dit om die blikkie. Plaas die gare op ‘n liniaal en meet hoe lank die gare is.
  • Die omtrek is 20,5 cm.
  • Spyker: 5 cm (skatting); 4 cm (lesing)
  • Meetsilinder: 6 cm (skatting; 5,5 cm (lesing

Leerder afdeling

Inhoud

Aktiwiteit: om die middellyn en omtrek van ‘n ronde voorwerp te kan meet [lu 1.2]

Gebruik die volgende skets om die terme "binnemiddellyn" en "buitemiddellyn" te definieer:

Die ronde vlak van die silinder staan bekend as die kromvlak van die silinder.

  • Bedink 'n strategie om die omtrek van die silinder se kromvlak te meet. Gebruik 'n 340ml koeldrankblikkie as 'n voorbeeld.

So het ons die omtrek van die blikkie se kromvlak gemeet:

Eers het ons ...

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_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

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_____________________________________________________________________

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  • Meet nou die middellyne van die volgende voorwerpe:
Voorwerp Skatting Lesing
Spyker (buitemiddellyn) _________________ _________________
Maatsilinder (binnemiddellyn) _________________ _________________

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.

Questions & Answers

calculate molarity of NaOH solution when 25.0ml of NaOH titrated with 27.2ml of 0.2m H2SO4
Gasin Reply
what's Thermochemistry
rhoda Reply
the study of the heat energy which is associated with chemical reactions
Kaddija
How was CH4 and o2 was able to produce (Co2)and (H2o
Edafe Reply
explain please
Victory
First twenty elements with their valences
Martine Reply
what is chemistry
asue Reply
what is atom
asue
what is the best way to define periodic table for jamb
Damilola Reply
what is the change of matter from one state to another
Elijah Reply
what is isolation of organic compounds
IKyernum Reply
what is atomic radius
ThankGod Reply
Read Chapter 6, section 5
Dr
Read Chapter 6, section 5
Kareem
Atomic radius is the radius of the atom and is also called the orbital radius
Kareem
atomic radius is the distance between the nucleus of an atom and its valence shell
Amos
Read Chapter 6, section 5
paulino
Bohr's model of the theory atom
Ayom Reply
is there a question?
Dr
when a gas is compressed why it becomes hot?
ATOMIC
It has no oxygen then
Goldyei
read the chapter on thermochemistry...the sections on "PV" work and the First Law of Thermodynamics should help..
Dr
Which element react with water
Mukthar Reply
Mgo
Ibeh
an increase in the pressure of a gas results in the decrease of its
Valentina Reply
definition of the periodic table
Cosmos Reply
What is the lkenes
Da Reply
what were atoms composed of?
Moses 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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