BENTUK MOLEKUL KIMIA





 1.Trigonal Bipiramidal
            Dalam kimia formasi bipyramid trigonal adalah geometri molekul dengan satu atom di pusat dan 5 lebih banyak atom di sudut-sudut sebuah segitiga dipyramid. Ini adalah salah satu dari beberapa kasus di mana obligasi sudut sekitarnya atom tidak identik (lihat juga dipyramid pentagonal), yang hanya karena tidak ada pengaturan geometris yang dapat menghasilkan lima sudut ikatan berukuran sama dalam tiga dimensi.
            Isomer dengan geometri trigonal bipyramidal mampu interconvert melalui proses yang dikenal sebagai pseudorotation Berry. Pseudorotation mirip dalam konsep ke pergerakan diastereomer konformasi, meskipun tidak ada revolusi penuh selesai. Dalam proses pseudorotation, dua ligan khatulistiwa (keduanya memiliki panjang ikatan lebih pendek dari ketiga) "pergeseran" terhadap sumbu molekul, sedangkan ligan aksial secara bersamaan "bergeser" menuju khatulistiwa, membuat gerakan siklus konstan. Pseudorotation sangat penting dalam molekul sederhana seperti PCl.
Konfigurasi elektron trigonal Bipyramidal merupakan bagian dari model VSEPR dari sebuah atom dengan 5 pasangan elektron.
contoh PF5 ,

2. Tetrahedron
            Dalam geometri, tetrahedron (jamak: tetrahedral) adalah polyhedron terdiri dari empat wajah segitiga, tiga di antaranya bertemu di setiap sudut. Ini memiliki enam tepi dan empat simpul. Tetrahedron adalah cembung polyhedron satunya yang memiliki empat wajah .Tetrahedron adalah kasus tiga-dimensi dari konsep yang lebih umum dari simpleks Euclidean.Tetrahedron adalah salah satu jenis piramida, yang merupakan polyhedron dengan basis poligon datar dan wajah segitiga yang menghubungkan dasar ke titik yang sama. Dalam kasus tetrahedron dasar adalah segitiga (salah satu dari empat wajah dapat dianggap basis), sehingga tetrahedron juga dikenal sebagai "piramida segitiga".Seperti semua polyhedra cembung, tetrahedron dapat dilipat dari satu lembar kertas. Ini memiliki dua jaring [1].
            Untuk setiap tetrahedron terdapat sebuah bola (yang circumsphere) sedemikian rupa sehingga simpul tetrahedron yang terletak di permukaan bola.
                  
Contoh HCl ,

3.Oktahedral
Molekuler geometri octahedral merupakan bentuk senyawa  kimia dimana enam buah gugus atau ligan secara simetri mengelilingi satu atom pusat(ML6).



CARA MEMBUAT BENTUK MOLEKUL
ALAT DAN BAHAN :
1.     Bola kecil
2.    Tusuk sate
3.    Lem








Naughty Rabbit




Name : Jeanete Johana Essing
Class : XI IPA BINSUS 1
Story : Naughty Rabbit
Once upon a time there were a four rabbits. Their names were Flopsy , Mopsy , Cotton-tail and Petter. One morning they were allowed to play outside. Their mother reminded them not to go to Mrs. Violet’s garden because their father had an accident there.
Flopsy , Mopsy , Cotton-tail  were good little rabbits. They went down the lane to pick blackberries. But Petter was naughty , he ran straight away to Mrs. Violet’s garden. He ate some spinach , carrot and beans. Suddenly , he met Mrs. Violet.Petter was very frightened and rushed away as fast as he could. He lost a pair of shoes and a jacket while he was running. Petter never stopped running or looked behind him till he got home. During the evening  , he was sick because he was so tired. He had to drink some medicine while three of his brother had bread , milk and blackberries for supper.

Questions
1.      Who was the naughtiest rabbit ? (Petter)
2.      What did Peter lose while he was running ? (A pair of shoes and a jacket)
3.      Why Petter met Mrs. Violet and made he very frightened and rushed away as fast as he could ?
(Because Petter so naughty , don’t listen what his mother reminded and ran to Mrs.Violet’s garden)
4.      What the end of this story ? ( Petter had to drink some medicine while his brother had bread , milk  and blackberries )
5.      What lesson do you learn from the story above ?
“Always listen what did your parents said because it for your kindness”

Legenda Banyuwangi dalam bahasa inggris



Legend of Banyuwangi

Long time ago Banyuwangi was called Blambangan. It was a kingdom under a wise king who had a handsome and smart son. Raden Banterang was his name. He liked hunting very much. He often went to forest around Blambangan to hunt for animals. One day when he was in a forest he saw a deer. He chased it and the deer ran deeper into the forest. His horse was so good and strong that he left his guards behind. Unfortunately he lost the deer. As he took a rest under a big banyan tree suddenly a lovely lady appeared in front of him. Raden Banterang was very surprised to see a beautiful girl alone in the forest. He was suspicious that she was not a human being. So he asked her.
‘Excuse me lovely lady, do you live around here?’
‘No, I don’t. I’m from Klungkung, Bali. My name is Surati. I’m a princess, the daughter of the king of Klungkung. I need your help’
‘I will gladly help you, but please tell me what your problem is’
‘I’m in danger. There was a rebellion in Klungkung. The rebel killed my father but I could escape. My guards took me here but I lose them. Now I’m alone. I don’t know where to go. I have no relative here. Please help me’
‘You are coming to the right person. I’m prince Banterang from the kingdom of Blambangan. I will protect you. Please come with me.’
Then Raden Banterang took Surati home. He fell in love with her and then several months later he married her. One day when Surati was in the street he met a man. The man called him.
‘Surati, Surati’
She was surprised to realize that the man was her brother Rupaksa. Rupaksa told her that it was Raden Banterang who killed their father. He came to Blambangan to take revenge and asked surati to join him. Surati was shocked but she refused to join.
‘I’m really shocked to hear the news. But I’m not sure. Raden Banterang is now my husband. He’s very kind to me. He never hurts me. He’s protecting me. As a good wife I will never betray him. It is my duty to serve him.’
‘But he killed our father’.
‘It is hard for me to believe it. When I met him he was here, not in Klungkung’
Rupaksa was disappointed with her sister. He was also very angry to her.
‘OK then. I have to go now. But please keep my head dress. Put it under your pillow’
Rupaksa gave his head dress to his sister Surati. To respect her older brother Surati put it under her pillow. Several days later Raden Banterang was hunting in a forest when he met a man that looked like a priest. The man greeted him politely. Then he said something.
‘Your life is in danger. Someone has an evil intention to you’
‘Who is he?’
“Your wife Surati’
“Surati? How do you know?’
‘I am a priest. I have clear spiritual vision. I just want to save you. Search her room. If you find a head dress under her pillow then my words are correct. It is from a man who will help her kill you’
‘Thank you your Holiness’
Raden Banterang was shocked. He was very angry to his wife then he immediately went home. When he got to the palace he immediately searched Surati’s bed room. As he found the head dress under her pillow he was sure that the priest was right.
‘You are unfaithful wife. I know that you want me dead. This is the evidence. This is from a man who will help you kill me. Tell me who he is’
Surati was shocked and cried.
‘It is my brother’s head dress. I met him several days ago when you  went hunting. He gave me his head dress and told me to put it under my pillow. So I put it there to respect him. It is him who want to kill you, not me’
But Raden Banterang did not trust her. He gave her a death sentence. He took his wife to a river bank as he would stab his wife and throw her body into the river.
‘Before I die, let me say a few words’
‘Please do’
‘After I die, just throw my body into the river. If the water become dirty and smelly, it means that I am guilty. But if the water become clear and fragrance come out of it, it means that I am innocence’.
Then as Raden Banterang would stab her wife with a kris Surati threw herself into the river. Amazingly the water became clear and fragrance came out of it. Surati was innocent! Raden Banterang regretted his emotional behavior. Since then on he changed the name of his kingdom into Banyuwangi. Banyu means water and Wangi means fragrance.
Hikmah yang dapat dipetik dari Legenda Banyuwangi dalam bahasa inggris diatas ialah janganlah mudah percaya pada seseorang. Emosi sesaat bisa membutakan pikiran kita, bahkan sampai menimbulkan tindak yang dapat membahayakan diri sendiri dan orang lain di sekitar. Kajilah terlebih dahulu apa yang kita dapat, lalu bertindak secara rasional merupakan jalan keluar terbaik dari masalah yang kita hadapi. Legenda banyunwangi dalam bahasa inggris ini meski singkat tapi penuh makna


Example Prayer before study




Dear God heavenly father, thank you for your blessing for us since last days. Please bless our teacher, our friends, and all what will we do. To day we will start our lesson , hope God always blessing till our lesson finished .Help us oh lord so that we will understand the lessons that we will take today. Thank you Lord for every blessing that you have given us. This is our pray and appeal in the name of God , amen

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