And thus begins the most revolutionary biology course in history. Come and learn about covalent, ionic, and hydrogen bonds. What about electron orbitals, the octet rule, and what does it all have to do with a mad man named Gilbert...

Models are great, except they're also usually inaccurate. In this episode of Crash Course Chemistry, Hank discusses why we need models in the world and how we can learn from them... even when they're almost completely wrong....

In this video, we guide you through subnetting large networks using Class A and B addresses.

In this video, further explore subnetting large networks with additional scenarios.

In this video, test your understanding of subnetting with practice questions.

In this video, learn about Class B and C IP addresses, focusing on their structure and uses.

In this video, dive into calculating IPv4 addresses using binary, solidifying your subnetting skills.

In this video, explore the structure of an IPv6 address and understand its hexadecimal notation.

Boron trifluoride (BF₃) is an exception to the octet rule, where boron has only six valence electrons, leading to unique reactivity and electron-deficient behavior

In this topic, we explore how to draw and interpret the Lewis structures of carbon dioxide (CO₂) and nitrogen dioxide (NO₂), two important molecules in chemistry. CO₂ features a linear structure with double bonds between carbon and...

Lewis structures are diagrams that represent the bonding between atoms in a molecule and the lone pairs of electrons that may exist. These structures are crucial in understanding how atoms share or transfer electrons to form stable...

In learning about carbenes, we discovered the importance of diazomethane. So it will be a good idea to learn how to make this molecule, as well as some other things we can do with it, including something called the Arndt-Eistert...

This video explains the laws and regulations, focusing on the evidence.
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This clip is from the chapter "Certified Information Systems Security Professional CISSP Domain 1 - Security and Risk Management" of the series "CISSP®...

This video explains the IPv4 address format.<br/<br/>>

This clip is from the chapter "Routers and Network Layer" of the series "World of Computer Networking: Your CCNA start".This section introduces you to routers and the network layer.

This video continues to explain hosts in the same network with an example.
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This clip is from the chapter "Networks Masks and Subnetting" of the series "World of Computer Networking: Your CCNA start".This section introduces...

This video wraps up your learning of number of hosts needed in a network with an example.
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This clip is from the chapter "Networks Masks and Subnetting" of the series "World of Computer Networking: Your CCNA start".This...

This video wraps up your learning of hosts in the same network with an example.
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This clip is from the chapter "Networks Masks and Subnetting" of the series "World of Computer Networking: Your CCNA start".This section...

This video explains when to use the same network and when to use a different network.
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This clip is from the chapter "Networks Masks and Subnetting" of the series "World of Computer Networking: Your CCNA start".This section...

This video introduces you to nested subnetting.
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This clip is from the chapter "Networks Masks and Subnetting" of the series "World of Computer Networking: Your CCNA start".This section introduces you to networks masks and...

This video explains subnetting with an example.
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This clip is from the chapter "Networks Masks and Subnetting" of the series "World of Computer Networking: Your CCNA start".This section introduces you to networks masks and...

This video explains the different classes of IP addresses.
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This clip is from the chapter "Internet Protocol (IP) Addressing and Internet Protocol (IP) Packets" of the series "World of Computer Networking: Your CCNA...

Finally, you'll understand all those weird pictures of molecules with the letters and the lines and the dots! Those are lewis dot structures. Let's learn how to draw them. It's easier than you think.

It explains Bohr's model of an atom and electron distribution in different orbits. It also talks about valency.

It explains the Kossel-Lewis approach to chemical bonding, octet rule, covalent bond and classify its different types, Lewis dot structures of covalent compounds.