Periodic Table (元素週期表)

http://www.webelements.com

Greenhouse effect (溫室效應)

http://www.info.gov.hk/hko/wxinfo/climat/greenhs/c_grnhse.htm

Smoking and health (吸煙與健康)

http://www.info.gov.hk/hkcosh/cindex.html

Atomic spectrum (原子光譜)

http://jersey.uoregon.edu/vlab/elements/Elements.html

http://www.scidiv.bcc.ctc.edu/wv/spect/emission-flame-exp.html

Packing of particle (粒子的排列)

http://www.ill.fr/dif/3D-crystals

Chemical equilibrium (化學平衡)

http://chemistry.beloit.edu/Water/equilibP/

Laboratory safety (實驗室安全)

http://www.cityu.edu.hk/secondary_school_safety

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