我對科學(化學,生物)等好有興趣,想知更多有關資料~!

我係讀f5英中
..我認為你未必要咁早知..因為chem..bio都係幾深對中一黎講.
基本的東西未學好..就很難明白難度較高的東西.
不過..你想知..可以簡單講你知..
元素係構成所有物質,可以分別metal,non-metal,metalloid
水係H2O係無錯..
酸(acid)+鹹(alkali) -->中和作用(neutralization)
Dissolve係水..而出H+就係ACID
相反,出OH-就係ALKALI
example 1)
HCl(acid)+NaOH(alkali) -->NaCl(salt)+H2O(水)
example 2)
H2SO4(acid)+2KOH(alkali)-->K2SO4(salt)+2H2O(水)
就你所見..
acid都係有H..但有H唔一定係ACID
常用ACID有三種
分別:HCl (hydrochloric acid)
H2SO4(sulphuric acid)
HNO3(nitric acid)
AKALI 就有:
KOH (potassium hydroxide)
NAOH(sodium hydroxide)
這只是一小部分..仲有好多..
F4+F5加埋有3本CHEM書..

BIO(生物)
好難講..因為太多..建議你去買高中書如果你有興趣
人體的構成由無數的細胞(CELL)造成
一堆細胞specialize -->tissue(組織)
一堆tissue -->organ(器官)
就係咁多先..人體係好好好好複雜
希望以上資料對你有用..
有問題可以找我.

in the periodic table, elements are listed according to increasing atomic number starting at the upper left and arranged in a series of horizontal rows. H2O is the chemical formula of water..H and O are elements that form Water.
periodic table is a very useful tool to study chemistry..It shows the information of each elements. and you can know what elements can conbine together to become a molecules and how many bond they need etc.
I learnt Astronomy before, and i learnt something that i never known before, that is at the very begining of the universe.there is only 1 or 2 elements in the universe. it/they divided or something to become various elements.
It is not easy to tell u a lot here...if you are interesting in science..you should go library or buy some upper year textbooks..they are good for you

2008-01-11 20:55:02 補充：
我已經讀緊大三.自修生化.....但係成績麻麻..因為我中學時唔係讀理....所以個底打得唔係幾好..好多中學時GE野都只係一知半解...如果你真係對科學有興趣GE話...你唔好好似我咁....記住有咩唔明都要問到識.....咁樣你第日就會輕鬆好多.....我好鍾意科學...因為我好想知道呢個世界點解會運行....我相信科學可以改變命運......好高興你對科學都咁有熱諴..

2008-01-11 20:59:38 補充：
講多少少關於acid同base ge野俾你知...其實acid 係hydrogen ions doner n base is hydrogen ions recepetor...once acid is dissolve in water it will doner hydrogen and may affect other compound. n the pH depends on the hydrogen ions concentration. the higher H concentration, the lower pH , the stronger acid.

2008-01-11 21:07:07 補充：
所以你會發覺好多Acid都有H...ex. HCl, H2SO4....and base 通常都係有OH, 例如NaOH, 當NaOH is dissolved in water...佢會變成Na and OH-...當HCl 溶於水...佢會變成 H and Cl-, H and OH- 就會變成 H2O..即係水...宜Cl- 同Na 夾埋就變成NaCl..即係鹽la.....但唔係每一科acid n base reaction 都係咁.....遲d你就會學到...

2008-01-11 21:22:28 補充：
telomere,a stretch of repeated sequences at the end of chromosomes.當DNA複製一次,Telomere就會唔見緊一段..即係越黎越短..佢短到某一程度時..the cell will die..so科學家認為telomere同人ge衰老有關

2008-01-11 21:23:24 補充：
However..there is an enzyme that increases the lenght of telomore, preventing it to shorten but this enzyme is only found in cancer cells, yeast or simple cells.

唔好意思 咩係高LEVEL D既野?!

我唔覺得科學有高低LEVEL之分．
好似狄拉克（物理學家）利用唔受人注重的「自旋矩形」去合併量子學說，自旋和相對論．

請問你還記得小四的人體系統嗎？有多少個人體系統？人體系統的用處？

solid,liquid and gas.似是低LEVEL既野.但點解會因熱和大氣壓力而改變形態?

我也欣賞你主動學習,

其實不需要和其他人比較
基本的東西是很重要
我F1睇相對論,反物質 根本不明白
之後去兒童圖書館睇 十萬個為什麼? 發現原來有多野好有趣,自己根本唔知!(有日常例子 好過公式 )
仲可以考同學 串平日搬d公式d人
而加F3睇相對論,反物質(簡單板) 就明左好多

仲有最好唔好上網睇甘多好長科學知識 對眼唔好
有好未必是真的!!

想知更多科學,借書最好 係 330附近
走去圖書館其實很簡單

如有令你不開心 sorry
請繼續喜歡科學!!!

其實識公式唔係太有用....
因為會有好多一D叫做同素異形體既野(好似O2同O3咁)
根本背唔哂.......
同埋H2O唔係公式
係化學式
如果你想學CHEM既話我建議你先學好摩爾數同化合物既類型

而酸+鹹會變左以下既野
HX(aq)+YOH(aq)>H2O+YX
YX係鹽(唔係食得個D)
化學元素周期表係一個唔係人背既表.....
有成過百種元素
排列既方式係以元素中所含既質子數目去排
當然1就係代表得一粒質子
2就係代表有2粒質子

如果你要學BIO既我建議你唔好學人體住
好深
絕對唔岩中1學
但係你堅持要學既你可以去書局買HUMAN BIOLOGY
由靈通出版社出既
佢講個D野唔錯
有淺有深