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Rep til emnet atomer

Hvad består et atoms kerne af? Protoner og neutroner
Nukleoner Protoner og neutroner
Hvor er elektroner placeret? Elektroner er placeret i en elektronsky rundt om atomets kerne.
Atomets udstrækning inkl. elektronsky 10^-10m
Kernens udstrækning 10^-14m
Grundstoffet X skrives på følgende måde A - X Z
Hvad angiver A? nukleontallet (massetallet)
Hvad angiver Z? Protontallet/atom nummeret
Hvad angiver N? Neutrontallet
Hvis atomet skal have en neutral ladning, så skal der være lige mange ____ og ____ Protoner og elektroner
Hvis man ændre på nukleontallet (neutroner) i et atom så får man ____ Forskellige isotoper
u (unit) er enhed for hvad? Masse
Hvis et atom har 3 protoner, 6 neutroner og 3 elektroner hvilken masse har det så og hvorfor? 9 unit da protoner og neutroner masse ekstremt tæt på 1 unit mens elektroner kun vejer 1/1820 unit.
Hvad er en foton? Et foton er en lille mængde lys, som bliver udsendt når en elektron enten bliver absorberet eller exciteret.
Created by: Hove
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