[DSE化學2018]同學準備好DSE CHEM未? (3)

NH3溶左落水度
NH3(g)少左 > 瓶內氣壓下降 > 倒吸水

寫hydrogenation最正確
睇下marker到時會唔會隻眼開隻眼閉囉

印象中係 2Y <-> 3X + Z
kc = 0.48 M^2

牙sir會唔會挑戰99%？

因為我諗唔可能100%

你咁多年最高%係？

Photosynthesis 個題寫咗solar energy to chemical energy有無分 google話係light energy to chemical energy

更正確係within specific spectrum of light...

Solar energy 係太陽能。唔清楚啵

不嬲都過90% 一般around 95%
最高96定97%
應該無100%啦 要寫字解釋既卷正常都唔會100% 呢一刻HKEA都未有marking

上年我對完你份卷一二答案 成個人都輕鬆曬

有冇人有卷睇睇

Paper 2 如果得 7成 mc 錯4題仲有冇機會星到

字眼上唔係咁合理
solar energy係講energy source時用
light energy係正路寫法 你IS都係咁學
睇marker鬆唔鬆手

Aspirin + NaHCO3個題點解會becomes colourless solution？我大包圍寫哂form salt, co2

講起寫字諗起卷一最尾果條Na2O Al2O3 SO2
要點答？
我寫晒佢地既方程加少少文字解釋就算
唔知要點答

佢同人講過無100%
不過除左maths好似無聽過其他科有100%存在

5*今年預佢around 80%

好智障 MC 二題incorrect 同correct 調轉

加NaOH 加HCl eg Na2O react with HCl, pH of solution deceases, showing alkaline property of the oxide + eqt 我係咁寫 之後成題最尾加多句 ionic oxides are basic oxides, covalent oxides are acidic oxides, Al2O3 is amphoteric