(1) Learnt that H3PO4 is actually Phosphoric acid.
(2) Was told to memorize the definition of important terms in chemistry.
eg, Relative isotopic mass is defined as the mass of one atom of an isotope* compared with 1/12 the mass of one atom of carbon-12.
* recapping chemistry o levels, isotopes are atoms with the same number of protons but different number of neutrons.
eg2, Relative atomic mass (Ar) is defined as the mass of one atom of an element compared with 1/12 the mass of one atom of carbon-12.
Things to learn:
How to type the small numbers of the formula via the keyboard. Forgot the steps Ms Jee taught us the other day. Anyone?
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Hi Dian,
ReplyDeleteIt's pressing "CTRL" followed by "=" for subscript.
Press "CTRL" followed by "SHIFT" followed by "=" for superscript.
To return to normal font, press the same keys again.
By the way, I realise it does not work in blogs. Try it in MS Word?
Cheers,
Ms Jee