Atoms are the basic building blocks of all matter and they are very very small. They are made up of protons, neutrons and electrons and they are the smallest unit of matter that still retains the basic properties of an element.

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In this video Paul Andersen explains how elements and molecules are made of atoms. In a pure sample of a pure substance the average mass remains the same. If more than one atom is found in a molecule the ration of average masses...

Why does changing just one proton in the nucleus of an atom make a different element? How can a single proton make such a huge difference in an element’s properties?



The simple answer is: The number of...

In chemistry, we usually talk about atoms and molecules. When we introduce the term 'element', things get a little confusing. In this video, we will cover what an element is in chemistry and give you some examples.

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To make most complex structures in the universe like trees, and us, you need more than atoms. You need molecules. How do you go from atoms formed in the core of stars, to molecules that can lead to living...

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...

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...

Atoms and Elements: Defining Terms distinguishes the differences between an atom, an element, a molecule, and a compound.

This video is a lesson on how to represent elements and compounds in terms of the atoms they can take. The video covers the definition of an element, the periodic table, chemical symbols, and formulas. It also explains how compounds are...

This live-action video program is about the word element. The program is designed to reinforce and support a student's comprehension and retention of the word element through use of video footage, photographs, diagrams and colorful,...

Video on QM of Atoms which may clarify some concepts:    • The Quantum Mechanical model of an atom. W...  

Why do atoms combine to form molecules? The quantum mechanics of chemical bonds and chemistry....

Atoms, elements, molecules... What's the difference? This is part 3 in the Stated Clearly series: An Introduction to Chemistry. In it you will find a simplified definition of a molecule, you will learn how we model molecules, and you...

This program makes the Modern Periodic Table come alive to students. Numerous real-life examples of elements are exemplified in the table. Animations and graphics illustrate concepts not easily achieved through other instructional...

Element and compound

Upon viewing the Investigating Mixtures, Solutions, Elements, and Comnpunds video series, students will be able to do the following: Understand that everything we see, touch, and even things we can't see are made up of matter. Understand...

For thousands of years, water was thought to be an element. That is, until some of the greatest chemists in the world managed to crack it open.

Atoms can (and do) bond constantly; it's how they form molecules. Sometimes, in an atomic tug-of-war, one atom pulls electrons from another, forming an ionic bond. Atoms can also play nicely and share electrons in a covalent bond. From...

Today's Crash Course Chemistry takes a historical perspective on the creation of the science, which didn't really exist until a super-smart, super-wealthy Frenchman put the puzzle pieces together - Hank tells the story of how we...

What exactly can we tell about an unknown substance by it's properties. We already know that a substance is matter that’s made of one kind of atom or molecule, and that has specific properties and that some substances are elements, which...

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...

The explanation covers the electron configurations, quantum mechanics, and relativistic effects that determine these properties. This video is perfect for anyone curious about the science behind element properties....

Upon viewing the Exploring the Building Blocks of Matter video series, students will be able to do the following: Understand that the quest to better understand the building blocks of matter has transpired over the past several thousand...

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...

What is an atom? And what is it made of? In this video, I will be introducing you to the atom. We will also look at concepts like atomic mass, elements and isotopes.