Empirical and Molecular Formulas are used to help scientist determine the identity of unknown substances. In this video, we discuss what empirical and molecular formulas are, what the difference is between them and how to find/calculate...

Explains how equilibrium shifts in response to pressure changes, following Le Chatelier’s Principle

Explores the units of equilibrium constants for reactions in different states

Discusses equilibrium in gaseous reactions and the role of partial pressures

Molar mass is the mass of 1 mole of a substance. The molar mass of elements can be found on the periodic table and the molar mass of compounds can be found by adding together the molar masses of the elements present in the compound....

Percent composition is the percent of total mass of one element in a compound. We can find the percent composition by using this formula: mass of element/total mass of compound times 100. In this video, we will cover what percent...

The mole is an important concept to understand in chemistry and being able to convert the mole to different units like grams, molecules, ions, atoms or liters is equally important. In this video, we cover the different conversion factors...

The molecular formula is the actual formula of a compound and can be found by comparing the mass of the molecular formula to the mass of the empirical formula to figure out how much bigger the molecular formula is compared to the...

Understanding the mole and how to use it is essential to your success in chemistry. The mole just represents the amount of a substance. 1 mole of anything is equal to 6.02 x 10^23 which is known as Avogadro's number. This number tells us...

Teachers will love the whack a mole game from Wordwall. I create the classic whack a mole game in Wordwall in just a few minutes. Wordwall is great for classroom teaching or for using the games for online learning, asynchronous learning...

The final images of NASA's InSight lander probe.

Organized crime can be explained as a complex and thoroughly centralized criminal enterprise that has been established for the explicit purpose of engaging in unlawful activities. In the world we live in, hundreds of organized crime...

Will this be the last video I make about SI units? Quite possibly. There's something about being so precise and defining the systems within which science works. When we can more accurately and routinely measure a kilogram, a mole, a...

Hybridization Process: Carbon atoms undergo sp² hybridization, mixing one 2s and two 2p orbitals to form three sp² hybrid orbitals arranged in a trigonal planar geometry (120° bond angles). Bond Formation: Two sp² orbitals form sigma (σ)...

The Born-Haber cycle calculates lattice energy using steps like ionization, electron affinity, and sublimation, showing the energetics of ionic compound formation

Lattice energy is the energy released when ions combine to form an ionic solid. Higher lattice energy indicates a stronger ionic bond and greater stability

Cations, formed by electron loss, influence ionic bond strength. Smaller cations with higher charges create stronger ionic interactions

NASA's InSight has run into a few difficulties since it landed. Can scientists overcome them?

SI is the International System of Units.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...

The number of particles in 1 mole of a substance, which is 6.022 times 10 to the power of 23.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise...

All animals develop specific characteristics in response to their environment, but some adaptations are more weird and wonderful than others. Biology - Adaptation And Evolution - Learning Points. Every animal species on the planet has...

What's that noise? ... It's a mole hunting.
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Material processes - Classifying ma
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erials - Soil


A Twig Tidbit Film - What’s that noise? The children have
to identify an object from its
sound...

Discover the most unusual nose in the animal kingdom!
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Life processes - Humans and other animals - Humans' and other
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Learning Points
The star-nosed mole uses


its unusual...

Ethane and butane exhibit different conformations due to rotation around their carbon-carbon single bonds. In ethane, the most stable conformation is the staggered form, where the hydrogen atoms on adjacent carbons are positioned as far...