Bismillah
Hi guys :D this posting requested by my student in Delayota Senior High School. probably you'll find this in internet. But wish this direct link can help you ^^
http://www.4shared.com/folder/IyImxms4/Chemistry.html
Bismillah....
this one is the link of X MIPA 5,6,7 to get the handout of Chemistry lesson
https://app.box.com/s/4r9miqxy6lkh5yvqasup
Wish you luck and keep spirit :)
Membuat Tugas Augmented Reality dan Flash: bisa dicek di sini :)
https://www.box.com/s/nd8fmomen4gn3bxgt5e3
Writing is something that not really easy for all people, I mean every people have their own difficulty in writing. Maybe I'm difficult in grammar or someone else difficult inconstruct the idea.
So here we talk about how to write a good lesson plan. Since I'm still study how to do this, it just sharing of my own experience in write a lesson plan
The first thing yo do is decide what topic will you bring to your student. Then it will be more sistematically in writing lesson plan from Title until the evaluation.
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| General Lesson Plan based on Mr Yatiman's Course |
So if you think you can't make a good lesson plan... Hmmm, everything will be more easy if you try, try and try. Like what Miko said in his job interview in Webcame Bareng Disty (Malam Minggu Miko))
I will never say neverI will fight till foreverWhenever you knock me downI will not stay on the groundPick it up, pick it upPick it up, pick it upAnd never say never
Hihihi ^^v cheers
For further example you can download on my box:RPP Bronsted-Lowry in Folder Microteaching (Tugas Kuliah)
Alhamdulillah. Tambahan pelajaran bikin RPP. Lebih cermat lagi ^^d
An amphiprotic substance is one which can both donate hydrogen ions (protons) and also accept them. Water is a good example of such a compound. The water acts as both an acid (donating hydrogen ions) and as a base (by accepting them). The "protic" part of the word refers to the hydrogen ions (protons) either being donated or accepted. Other examples of amphiprotic compounds are amino acids, and ions like HSO4- (which can lose a hydrogen ion to form sulphate ions or accept one to form sulphuric acid).
But as well as being amphiprotic, these compounds are alsoamphoteric. Amphoteric means that they have reactions as both acids and bases. So what is the difference between the two terms?
All amphiprotic substances are also amphoteric - but the reverse isn't true. There are amphoteric substances which don't either donate or accept hydrogen ions when they act as acids or bases. There is a whole new definition of acid-base behaviour that you are just about to meet (the Lewis theory) which doesn't necessarily involve hydrogen ions at all.
A Lewis acid is an electron pair acceptor; a Lewis base is an electron pair donor (see below).
Some metal oxides (like aluminium oxide) are amphoteric - they react both as acids and bases. For example, they react as bases because the oxide ions accept hydrogen ions to make water. That's not a problem as far as the definition of amphiprotic is concerned - but the reaction as an acid is. The aluminium oxide doesn't contain any hydrogen ions to donate! But aluminium oxide reacts with bases like sodium hydroxide solution to form complex aluminate ions.
You can think of lone pairs on hydroxide ions as forming dative covalent (coordinate) bonds with empty orbitals in the aluminium ions. The aluminium ions are accepting lone pairs (acting as a Lewis acid). So aluminium oxide can act as both an acid and a base - and so is amphoteric. But it isn'tamphiprotic because both of the acid reaction and the base reaction don't involve hydrogen ions.
I have gone through 40-odd years of teaching (in the lab, and via books and the internet) without once using the term amphiprotic! I simply don't see the point of it. The term amphoteric takes in all the cases of substances functioning as both acids and bases without exception. The term amphiprotic can only be used where both of these functions involve transference of hydrogen ions - in other words, it can only be used if you are limited to talking about the Bronsted-Lowry theory.
Personally, I would stick to the older, more useful, term "amphoteric" unless your syllabus demands that you use the word "amphiprotic".
Taken from http://www.chemguide.co.uk/physical/acidbaseeqia/theories.html
For further explanation about Bronsted-Lowry Theory: http://www.youtube.com/watch?v=7qBRIWSA3Yc
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