Learn the basics about the shapes of simple molecules, when learning about properties of matter.
In reality the shapes of simple molecules are 3-D molecules and should be visualised as such. Imagine now the central carbon atom surrounded by a sphere. We now need to position the hydrogens in such a way as to ensure that all the paired electrons in the covalent bonds are as far away from each other as possible. This is known as electron pair repulsion theory as the electron pairs and bonding pairs repel one another and we will end up with a triangular pyramid shape at the bottom, with a hydrogen at each corner and a fourth hydrogen coming out of the top. This shape with four bonding pairs is known as a tetrahedral molecule with a bond angle of 109 degrees.
In water there are two bonding pair electrons and two lone pair electrons. The lone pair electrons will repel the binding pair electrons even more than before creating a v shaped or bent molecules with a bind angle of 104 degrees. All three of these molecules were based on 4electron pairs, either binding pairs or lone pairs. They were therefore all based on the original tetrahedral molecule however the bond angle changed due to the extra repulsion due to the lone pair electrons.
SUBSCRIBE to the Fuse School YouTube channel for many more educational videos. Our teachers and animators come together to make fun & easy-to-understand videos in Chemistry, Biology, Physics, Maths & ICT.
JOIN our platform at www.fuseschool.org
This video is part of 'Chemistry for All' - a Chemistry Education project by our Charity Fuse Foundation - the organisation behind The Fuse School. These videos can be used in a flipped classroom model or as a revision aid. Find our other Chemistry videos here:
Access a deeper Learning Experience in the Fuse School platform and app: www.fuseschool.org
Follow us: http://www.youtube.com/fuseschool
Friend us: http://www.facebook.com/fuseschool
This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY-NC ( View License Deed: http://creativecommons.org/licenses/by-nc/4.0/ ). You are allowed to download the video for nonprofit, educational use. If you would like to modify the video, please contact us: email@example.com
Tagged under: Science,Chemistry,learn,Revision,GCSE,Alevels,AQA,students free online courses video science videos,student,fuseschool,global education,ict4d,simple molecules,properties matter,shapes molecules,carbon atom,hydrogen atom,bonds,paired electrons,covalent bonds,electron pair repulsion theory,electron pairs,repulsion,tetrahedral molecule,bond angle,bonding electrons
Find more lesson plans like this:2nd Grade Science Fair Projects
Clip makes it super easy to turn any public video into a formative assessment activity in your classroom.
Add multiple choice quizzes, questions and browse hundreds of approved, video lesson ideas for Clip
Make YouTube one of your teaching aids - Works perfectly with lesson micro-teaching plans
1. Students enter a simple code
2. You play the video
3. The students comment
4. You review and reflect
* Whiteboard required for teacher-paced activities
With four apps, each designed around existing classroom activities, Spiral gives you the power to do formative assessment with anything you teach.
Carry out a quickfire formative assessment to see what the whole class is thinking
Create interactive presentations to spark creativity in class
Student teams can create and share collaborative presentations from linked devices
Turn any public video into a live chat with questions and quizzes