Chemical Bonds

Find out more about Chemical Bonds!

Category:

Science & Technology

Tags:

• Chemistry
• chemical
• bond
• periodic
• table
• element
• atom
• molecule
• electron
• proton
• polar
• covalent
• orbital
• energy
• electronegat

[SodyP0p]

There is one problem in this otherwise wonderful video. Ionic bonds are weaker than covalent bonds. The reason sugar melts at a lower temperature than salt is that salt's ionic bonds act to hold the entire solid together. Sugar's covalent bonds only act within the sugar molecule. The dipole-dipole forces and London dispersion (sometimes called Van der Waal's) forces between sugar molecules are weaker than ionic bonds. Look at diamond for an example of how strong covalent bonds are.

[cassiopeiaproject]

We agree with you in principle. Chemical bonds of "different types" actually form a range of strengths and there is no really clear delineation between the types. In our effort to simplify the concepts we may have painted too sharp a difference. Comparing Ionic and Covalent bonds in general terms can fall apart when you start to look at specifics.

[cassiopeiaproject]

However, it takes 787 kilojoules per mole to break the Na-Cl bond in sodium chloride while a carbon-carbon covalent bond requires something on the order of 154 kilojoules per mole. As a rule of thumb, the more a bond is like an electrostatic attraction between unlike charges, the more energy it takes to disrupt. Thus the assertion that ionic bonds are stronger than covalent.

[cassiopeiaproject]

Disrupting the bonds in something like table salt takes a lot of energy. Disrupting the bonds in a sugar molecule will take considerably less energy.

[MaDrung]

Is it 99% sure that electrons are flying around the atom. I've heared that it was prowed to be false, but is still used for demonstration and easier explanation.

[cassiopeiaproject]

The modern view is that electrons trapped in atoms take the form of an electron shell. These shells or orbitals can have a variety of shapes depending on their quantum numbers. The older picture of electrons in atoms traveling in circular orbits around the nucleus is false.

[wadupian]

Why didn't my teacher tell it to me this way! Thanks for uploading

[shadieblue]

Great video.Great!

[MyMiro1]

sob7an allah !

[cholland454]

Melting sugar breaks hydrogen bonds, not covalent bonds.

[lassermaable]

Can you tell me that on what things chemical bond depends on?

[vovanvuongvuiu]

@vdupham Haha, hổi câu này chắc chắn là sinh viên IU rồi, tư nghiên cứu đi pa.

[vdupham]

How many types of bonds are there? How are they formed and what are their properties?

[hareljann1]

Very nice video. Thak you!

[MrTrykster]

wow this was beautiful :)

[liquidminds]

eventhough, the border between physics and chemistry is a vital part of physics, as well as chemistry, there is a huge lack of information about that topic avaliable.

Thanks for attempting to change that.

[ratonL]

Beautfiful... =)