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21日內完成可獲勤學獎 2

課程內容

共4.5小時
Occurrence and extraction of metals

第1節

A. Source of metals and their occurrence in nature 07:36
B. Methods of metal extraction 09:31
C. Discovery of metals and the ease of extraction 03:29
D. Limited reserve of metals and their conservation 03:06
A01. Comparing reactivity of common metals - reaction of metals with oxygen 12:08
A02. A01. Comparing reactivity of common metals - reaction of metals with water / steam 11:53
A03. Comparing reactivity of common metals - reaction of metals with dilute acids 07:17
B. The metal reactivity series 01:07
C. Chemical equations 20:17
D01. Ionic equations (1) 07:30
D02. Ionic equations (2) 10:46
E. Metal reactivity series and the tendency of metal to form positive ions 04:57
F. Displacement reactions 18:10
A. Moles 15:26
B. Molar mass 09:45
C. Percentage by mass of an element in a compound 08:39
D01. Determining the empirical formula of a compound from experimental data (1) 11:40
D02. Determining the empirical formula of a compound from experimental data (2) 06:04
D03. Determining the empirical formula of a compound from experimental data (3) 05:37
D04. Determining the empirical formula of a compound from experimental data (4) 09:21
E. Determining the molecular formula of a compound from empirical formula 14:12
F01. Reacting masses from chemical equations (1) 10:14
F02 . Reacting masses from chemical equation (2) 10:34
Introduction 02:35
A01. Corrosion of iron (rusting) 04:51
A02. Conditions necessary for rusting to occur 03:53
A03. Chemistry of rusting 03:31
A04. Factors speed up rusting 08:00
A05. To observe rusting using a rust indicator 08:17
A06. Methods used to prevent rusting 12:43
B. Corrosion resistance of aluminium and aluminium anodisation 05:01

化學

【深度學習】Metals

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21日內完成可獲勤學獎 2
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課程概覧

課程配套

31堂,共4小時28分鐘
適合F.4 - F.6
62頁課程筆記 (只有英文筆記)
一年內無限次使用

此課程現正限時免費予同學報名,只需繳交筆記印刷、郵寄成本即可獲得此課程的使用權限!

唔少同學一嚟到 Metals 呢一課就開始覺得難,因為大家係要開始學識寫一種新語言——"Chemical Equation"

响呢一課,你需要學識好多 Metals 同其他 Reagents 嘅 Chemical Reactions,而大家係要識得用 Chemical Equations 去表達唔同嘅reactions。

第二樣大家覺得難嘅,就會係 Mole Calculations。雖然都只係四則運算,加減乘除,但因為同學係會接觸到一啲日常生活裏面好陌生嘅單位,所以可能會覺得有啲難。但上完呢個課程之後,同學就可以輕輕鬆鬆學識:

  • 點樣從地彀𥚃面,將有用嘅 metals extract 出嚟。包括用 heating the ore alone, carbon reduction 同 electrolysis of molten ore。
  • 用適合嘅方法去extract 有唔同 reactivity 嘅金屬。
  • 點樣從同唔同嘅 reagents:oxygen,water 同 acid 嘅 reactions,去將唔同嘅 metals 根據佢哋嘅 reactivity 排成 metal reactivity series。
  • 寫 metals 同 oxygen,water,steam 同 acid react 嘅 chemical equations。
  • 乜嘢係 displacement reaction。
  • 點樣計一樣 substance 嘅number of moles。
  • 乜嘢係 Avogadro’s constant。
  • 點樣搵一個 compound 嘅 empirical formula 同 molecular formula。
  • 從一個 chemical reaction 其中一個 reacting species 嘅重量,透過 balanced equation 唔同嘅 reacting species 嘅 mole ratio,去計出其他 reacting species 所需,或者所產生嘅重量。
  • 乜嘢係 metal corrosion,而 rusting 就係 corrosion of iron。
  • 生銹 rusting 要啲乜嘢條件。
  • 乜嘢係 rust indicator,同埋當 rusting 發生嘅時候,會有啲乜嘢顏色改變。
  • 有啲乜嘢因素會令到 rusting 加快。
  • 有啲乜嘢方法可以 prevent rusting 。
  • 點解雖然 aluminium 係比 iron reactive,但係佢嘅corrosion resistant 反而係比 iron 高。
  • 點樣透過 anodisation 去增加 aluminium 嘅 corrosion resistance。

【深度學習】系列啱邊種學生報讀?

【Chem-Animax】系列嘅課程可以幫你掌握到每個課題嘅基本概念。但如果你想更深入了解每個課題嘅要點同答題方針,咁就可以報讀【深度學習】系列嘅課程!呢個系列係專為一啲願意付出時間、心機去為未來前途打拼嘅同學而設。

响課程嘅數小時𥚃面,我會同你一齊深度探討每一個 topic 嘅要點、答題技巧,從零開始帶領住你一步一步掌握所有DSE要識嘅概念!

課程附有一份精美筆記,筆記內容除咗用精簡嘅文字表達之外,仲附有大量 infographics 圖畫,可以幫你加強理解同記憶。加上適量嘅例題、習題加以解明,亦能提升你嘅答題技巧。有咗概念加上技巧,同學應付考試,就自然得心應手。

課程內容
A. Source of metals and their occurrence in nature 07:36
B. Methods of metal extraction 09:31
C. Discovery of metals and the ease of extraction 03:29
D. Limited reserve of metals and their conservation 03:06
Reactivity of metals

第2節

A01. Comparing reactivity of common metals - reaction of metals with oxygen 12:08
A02. A01. Comparing reactivity of common metals - reaction of metals with water / steam 11:53
A03. Comparing reactivity of common metals - reaction of metals with dilute acids 07:17
B. The metal reactivity series 01:07
C. Chemical equations 20:17
D01. Ionic equations (1) 07:30
D02. Ionic equations (2) 10:46
E. Metal reactivity series and the tendency of metal to form positive ions 04:57
F. Displacement reactions 18:10
Reacting masses

第3節

A. Moles 15:26
B. Molar mass 09:45
C. Percentage by mass of an element in a compound 08:39
D01. Determining the empirical formula of a compound from experimental data (1) 11:40
D02. Determining the empirical formula of a compound from experimental data (2) 06:04
D03. Determining the empirical formula of a compound from experimental data (3) 05:37
D04. Determining the empirical formula of a compound from experimental data (4) 09:21
E. Determining the molecular formula of a compound from empirical formula 14:12
F01. Reacting masses from chemical equations (1) 10:14
F02 . Reacting masses from chemical equation (2) 10:34
Corrosion of metals and their protection

第4節

Introduction 02:35
A01. Corrosion of iron (rusting) 04:51
A02. Conditions necessary for rusting to occur 03:53
A03. Chemistry of rusting 03:31
A04. Factors speed up rusting 08:00
A05. To observe rusting using a rust indicator 08:17
A06. Methods used to prevent rusting 12:43
B. Corrosion resistance of aluminium and aluminium anodisation 05:01

深度學習系列

呢個系列係專為一啲願意付出時間、心機去為未來前途打拼嘅同學而設!响課程嘅數小時𥚃面,我會同同學一齊深度探討每個課題嘅要點,從零開始帶領住同學一步一步將所有要識嘅概念學會。課程均附有一份精美筆記,筆記內容除咗用精簡嘅文字表達之外,仲附有大量 infographics,幫助同學加強理解同記憶。加上適量嘅例題、習題加以解明,亦能提升同學嘅答題技巧。有咗概念加上技巧,同學應付考試,就自然得心應手。

系列課程

呢個系列係專為一啲願意付出時間、心機去為未來前途打拼嘅同學而設!响課程嘅數小時𥚃面,我會同同學一齊深度探討每個課題嘅要點,從零開始帶領住同學一步一步將所有要識嘅概念學會。課程均附有一份精美筆記,筆記內容除咗用精簡嘅文字表達之外,仲附有大量 infographics,幫助同學加強理解同記憶。加上適量嘅例題、習題加以解明,亦能提升同學嘅答題技巧。有咗概念加上技巧,同學應付考試,就自然得心應手。

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【深度學習】Acids & Bases

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化學

【深度學習】Metals

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$350 $40

關於導師

Winter Sir

化學

Winter Sir

Winter Sir 自從取得化學哲學碩士MPhil 之後,便加入教育行列。在一所英文中學任教了超過二十年。任化學科科主任亦超過十年。曾任公開考試閲卷員。
但......因為教得太耐,越教越覺得悶,越冇動力!不安於現狀嘅我,決定响五年前,開始拍以動畫形式進行嘅教學片。懶係雄心壯志,誓要將整個DSE 課程拍成動畫放上 YouTube,可以俾學生隨時隨地睇。經過幾年嘅努力,我所設立嘅 YouTube Channel chemchemday 訂閱人數已經超越4300。所拍嘅短片亦超過666 條。
近年接觸咗翻轉教學 flipped learning 之後,更加成為 flipped learning 嘅狂熱份子,燃燒返我對教育嘅熱誠,唔想再做教育界嘅老海鮮!希望可以將翻轉教學呢一種教學模式推廣到其他學校。

學生評論

3.7

課程分數
66%
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33%
Weirdo

Weirdo

quite good but some concepts r too simple

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