Скачайте изображение (превью) выбрав качество

320x180 480x360 640x480 1280x720

How Do Atoms Bond | Properties of Matter | Chemistry | FuseSchool

NOTE: animation error at 2:40 - the periodic table is supposed to be twisted clockwise, and not like it is shown in the video. The twisting enables the element Cs to appear on the extreme left and the element F to appear on the right. In this way the elements get arranged from most metallic (Cs) to most non-metallic (F).


Learn the basics about how atoms bond when learning about the structure of atoms.

Bonds form by the attraction of negatively charged electrons and the positive nucleus of atoms. Atoms have a positively charged tiny nucleus which contains almost all the atom’s mass, surrounded by shells of negatively charged electrons. Each shell is able to hold only up to a fixed number of electrons when it is said to be full.

Hydrogen has a single positive charge in the nucleus and a single electron. If two hydrogen atoms approach each other, there is an attraction: the positive charge and the negative electron charge attract. However the first shell, for all atoms, can only contain two electrons so once the two Hydrogen atoms come together the two electrons essentially ‘fill’ the outer shell of both Hydrogen atoms. The atoms are essentially ‘glued’ together by the attraction of the two electrons and the two nuclei.

The same form of electron share bonding occurs between any non-metallic elements, with the outer shell quickly becoming full, limiting the number of bonds that form.

When there are four electrons in the outer shell, such as with carbon and silicon there is room for four more electrons so 4 bonds form. In this case it is possible to build up a 3-D structure with the bonding going on forever. In this way we see that carbon and silicon, as elements, have atoms chemically bonded into a 3D lattice so they are both solids at room temperature and very difficult to melt and vaporise. They are giant covalent structures.

Metallic bonding is the way all metals and alloys are bonded, and explains the typical properties of metals. Atoms can be added as much as you want and there will never be enough electrons to fill the outer shell. So in metallic bonding, the atoms form a closely packed lattice where the atoms are not bonded by fixed pairs of electrons, but rather by a ‘sea’ of electrons roaming these partially filled outer shells at will.

When two different atoms approach each other, covalent bonds can form. The number of electrons that are shared depends upon how many electrons are missing from the outer shells of the atoms.

Overall, in this video you will learn how two atoms which approach each other have the possibility to bond if there is space in their outer electron shells.
Non-metallic elements will tend to form self contained small molecules giving rise to volatile solids, liquids and all gases.
Carbon and silicon will give rise to giant structures.
Metallic elements will bond together to form metallic structures with loose electrons.
When metal bonds with a non-metal ionic compounds are formed.



SUPPORT US ON PATREON


SUBSCRIBE to the FuseSchool 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.

VISIT us at www.fuseschool.org, where all of our videos are carefully organised into topics and specific orders, and to see what else we have on offer. Comment, like and share with other learners. You can both ask and answer questions, and teachers will get back to you.

These videos can be used in a flipped classroom model or as a revision aid.

Find all of our Chemistry videos here:

Find all of our Biology videos here:

Find all of our Physics videos here:

Find all of our Maths videos here:

Instagram:
Facebook:
Twitter:

Access a deeper Learning Experience in the FuseSchool platform and app: www.fuseschool.org
Follow us:
Befriend us:

This is an Open Educational Resource. If you would like to use the video, please contact us: info@fuseschool.org

Чтобы скачать видео "How Do Atoms Bond | Properties of Matter | Chemistry | FuseSchool" передвинте ползунок вправо