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2.4 Atome

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Natuurwetenskappe

Graad 8

Materie: klassifikasie

Module 17

Atome

  • Ons het reeds genoem dat atome die kleinste deeltjies is waaruit materie bestaan.

Maar hoe groot is atome en hoe lyk hulle?

  • ‘n Atoom is 0,000 000 001m in deursnit - dit is ‘n miljoenste van ‘n millimeter!
  • As jy ‘n ballon sou opblaas en jy dink daar is niks in nie, weet dan dat daar omtrent ‘n biljoen biljoen gasatome binne-in is (100 000 000 000 000 000 000)!
  • Een kubieke millimeter tafelsout (soveel soos op ‘n speld se punt) bevat omtrent 70 miljoen atome!
  • As die atome in ‘n sandkorrel elkeen so groot soos ‘n speld se punt was, dan was die sandkorrel twee kilometer in deursnit!
  • Atome is wel die boublokke van materie, maar is by verre nie die kleinste deeltjie bekend aan die mens nie – daar is sub-atomiese partikels wat ons Protone, Neutrone en Elektrone noem.

Vra jou onderwyser om jou te help om ‘n waterstofatoom en ‘n suurstofatoom te teken:

Klasprojek

PLAKKAAT – Wetenskaplikes deur die eeue

  • Vind meer uit oor wetenskaplikes soos Ernest Rutherford (1911) en Neils Bohr (1913) en hulle bydrae tot wat ons weet van atome.
  • Versamel prente en bring die inligting na die klas.
  • Werk in groepe en maak ‘n plakkaat van wetenskaplikes deur die eeue . Ons gaan ook nog enkeles bygevoeg namate die module vorder.

Assessering van klasprojek

Het jy informasie ingesamel, die plakkaat saamgestel en so wetenskaplikes deur die eeue vereer vir hul pogings?

[LU 1.1; 1.2; 1.3; 3.1]

 Het jy geweet? 

Daar is sub-atomiese partikels soos muons, gluons en gravitone!

Daar is ook partikels kleiner as elektrone, genaamd kwarks (quarks) en leptone. Kwarks het snaakse name soos: op , af , vreemd , asook bo en onder.

Lees meer op oor hierdie vreemde goedjies.

Hulle is die kleinste partikels aan ons bekend.

www.geocities.com/omegaman_uk/2002

Assessering

LU 1

Wetenskaplike Ondersoek

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.

Dit is bewys as die leerder:

1.1 ondersoeke kan beplan;

1.2 ondersoeke kan uitvoer en data kan insamel;

1.3 data kan evalueer en bevindinge kan kommunikeer.

LU 3

Wetenskap, die Gemeenskap en die Omgewing

Die leerder is in staat om begrip van die onderlinge verband tussen wetenskap en tegnologie, die samelewing en die omgewing te toon.

Dit is bewys as die leerder:

3.1 wetenskap as ‘n menslike aktiwiteit kan verstaan;

3.2 volhoubare gebruik van die aarde se hulpbronne verstaan.

Questions & Answers

What is inflation
Bright Reply
a general and ongoing rise in the level of prices in an economy
AI-Robot
What are the factors that affect demand for a commodity
Florence Reply
differentiate between demand and supply giving examples
Lambiv Reply
differentiated between demand and supply using examples
Lambiv
what is labour ?
Lambiv
how will I do?
Venny Reply
how is the graph works?I don't fully understand
Rezat Reply
information
Eliyee
devaluation
Eliyee
t
WARKISA
hi guys good evening to all
Lambiv
multiple choice question
Aster Reply
appreciation
Eliyee
explain perfect market
Lindiwe Reply
In economics, a perfect market refers to a theoretical construct where all participants have perfect information, goods are homogenous, there are no barriers to entry or exit, and prices are determined solely by supply and demand. It's an idealized model used for analysis,
Ezea
What is ceteris paribus?
Shukri Reply
other things being equal
AI-Robot
When MP₁ becomes negative, TP start to decline. Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 • Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of lab
Kelo
Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 • Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of labour (APL) and marginal product of labour (MPL)
Kelo
yes,thank you
Shukri
Can I ask you other question?
Shukri
what is monopoly mean?
Habtamu Reply
What is different between quantity demand and demand?
Shukri Reply
Quantity demanded refers to the specific amount of a good or service that consumers are willing and able to purchase at a give price and within a specific time period. Demand, on the other hand, is a broader concept that encompasses the entire relationship between price and quantity demanded
Ezea
ok
Shukri
how do you save a country economic situation when it's falling apart
Lilia Reply
what is the difference between economic growth and development
Fiker Reply
Economic growth as an increase in the production and consumption of goods and services within an economy.but Economic development as a broader concept that encompasses not only economic growth but also social & human well being.
Shukri
production function means
Jabir
What do you think is more important to focus on when considering inequality ?
Abdisa Reply
any question about economics?
Awais Reply
sir...I just want to ask one question... Define the term contract curve? if you are free please help me to find this answer 🙏
Asui
it is a curve that we get after connecting the pareto optimal combinations of two consumers after their mutually beneficial trade offs
Awais
thank you so much 👍 sir
Asui
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities, where neither p
Cornelius
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities,
Cornelius
Suppose a consumer consuming two commodities X and Y has The following utility function u=X0.4 Y0.6. If the price of the X and Y are 2 and 3 respectively and income Constraint is birr 50. A,Calculate quantities of x and y which maximize utility. B,Calculate value of Lagrange multiplier. C,Calculate quantities of X and Y consumed with a given price. D,alculate optimum level of output .
Feyisa Reply
Answer
Feyisa
c
Jabir
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Source:  OpenStax, Natuurwetenskappe graad 8. OpenStax CNX. Sep 12, 2009 Download for free at http://cnx.org/content/col11049/1.1
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