[DSE化學2017]同學準備好DSE CHEM未?

咩係allotrope?

one of the forms of an element which can exist in more than one structure

咩係allotrope?

同一個原子/分子狀態但具有不同的physical properties 及結構
carbon係example

carbon有diamond graphic C60
P有紅P白P
仲有O2 O3都係
Fe都係

thxx

咩係allotrope?

one of the forms of an element which can exist in more than one structure

thxxxc

想問下primary同secondary cell 要唔要背equation 同charge位 背到想死想skip左

想問下primary同secondary cell 要唔要背equation 同charge位 背到想死想skip左

得zinc carbon / fuel cell要記
其他唔洗 佢會比足夠資料你砌條式

想問下primary同secondary cell 要唔要背equation 同charge位 背到想死想skip左

得zinc carbon / fuel cell要記
其他唔洗 佢會比足夠資料你砌條式

thanks 咁就好啦 chem已經溫完 最後衝刺做pp+exercise

可唔可以講吓anodization？

可唔可以講吓anodization？

process to increase the thickness of the Al2O3 layer on the Al surface
since the layer is impermeable to water and air, the anodized Al has a higher corrosion resistance

想問下primary同secondary cell 要唔要背equation 同charge位 背到想死想skip左

得zinc carbon / fuel cell要記
其他唔洗 佢會比足夠資料你砌條式

thanks 咁就好啦 chem已經溫完 最後衝刺做pp+exercise

祝你地修成正果上岸

可以係fb換張呃like用莊相

毒拎冇呢d機會

可唔可以講吓anodization？

process to increase the thickness of the Al2O3 layer on the Al surface
since the layer is impermeable to water and air, the anodized Al has a higher corrosion resistance

一定喺AL2O3?

有冇equation要背for anodixation?

冇背過實驗題係咪等收皮

想問埋daily application of O2, N2 , CO2

有冇equation要背for anodixation?

要知個Al object放anode同埋用dilute H2SO4 as electrolyte

有冇equation要背for anodixation?

要知個Al object放anode同埋用dilute H2SO4 as electrolyte

thx