Ar hap, Random, There’s no certain pattern - you don’t know what’s happening next., Does dim patrwm penodol - Dwyt ti ddim yn gwybod beth sy’n digwydd nesaf., Pilen athraidd ddetholus, Selective permeable membrane, A membrane cell that only lets some substances pass (eg small molecules)., Cell bilen sydd ddim ond yn gadael i rai sylweddau yn unig i basio (ee, moleciwlau bach)., Crynodiad, Concentration, This is the name given to how much of a substance there is - it can be high or low., Dyma’r enw ar faint o sylwedd sydd yno - gall fod yn uchel neu’n isel., Trylediad, Diffusion, A random movement from an area of high concentration to and area of low concentration., Symudiad sylwedd ar hap o ardal â chrynodiad uchel i ardal â chynodiad isel., Symudiad Net, Net movement, Efallai bod dipyn rhai moleciwlau yn symud i’r dde a rhai yn symud i’r chwith, ond efallai bod mwy yn mynd i’r chwith nac i’r dde. Dyma’r enw ar y math yma o symudiad., Maybe some molecules move to the right and some move to the left, but maybe more go to the left than the right. This is the name for this kind of movement..

Trylediad Bl.7

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