Bozeman Science
Elements and Molecules
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 remains...
Curated Video
What is Matter
New ReviewThis video introduces atoms, molecules, and the big bang theory that proposes the creation of matter.
Curated Video
Energy In Stars
New ReviewThis video explains how nuclear fusion occurs in stars and causes them to shine.
Curated Video
Why the Sun Shines: The Quantum Explanation
New ReviewThe mass of the sun was well understood, and translates to about 10^57 atoms. This leads to a lifetime of the sun of about 20,000 years. But we know the sun is at least 4.5 billion years old. So where does the sun's energy come from?...
Curated Video
Is Fine-Tuning in Physics Evidence of a Creator? A Scientific Viewpoint
New ReviewThen Isaac Newton in 1687 showed that planets move due to the same forces we experience here on earth. If things could be explained with mathematics, to many people this called into question the need for a God. But in the late 20th...
Curated Video
How Atomic Bombs Work—and Why Few Nations Have Them
New ReviewAt 5:30AM, dawn on July 16, 1945 near a small town called Alamagordo New Mexico, the course of human history was changed. The first atomic bomb was detonated that day, and sealed the fate of humanity. It took the work of many people to...
Curated Video
Where Did Earth’s Water Come From? Scientific Origins of Water
New ReviewWater on earth is found in all three forms. But how did water get on earth? Where did the water on earth come from? The earth has an estimated 325 million trillion gallons of it. But earth began as a barren, lifeless, waterless ball of...
Curated Video
How the First Molecules Formed in the Universe
New ReviewSUMMARY: 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 things? How did the...
Curated Video
How to Make Ionic Compounds
Howcast - Ionic compounds consist of two or more ions held together by electrical attraction. Ions with a positive charge are called cations while ions with a negative charge are called anions.
Curated Video
How to Understand Atoms
Howcast - The structure of atoms determines their physical and chemical properties. Using these guidelines, you can understand why some atoms are reactive and others are not.
Astrum
The Unique Characteristics of Saturn
Almost everything you could want to know about the sixth planet to the Sun, Saturn.
Curated Video
Drawing Bohr Models of Atoms and Ions - 3 easy steps!
While While the Bohr model of the atom is not the most accurate model we have today, it can help up show a lot of valuable information about the atom. Bohr models can show the protons and neutrons in the nucleus along with the number of...
Curated Video
Chemistry - how to calculate molar mass!
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....
Curated Video
Unveiling the SECRETS of Atomic Structure!
In this video, students will learn about atomic theory, atomic structure and how the atom is put together. This will include learning about the different subatomic particles, protons, neutrons and electrons, that make up the atom! This...
Curated Video
How to Determine the Number of protons, neutrons and electrons in an ION
In this video, we'll be talking about how to determine the number of protons, neutrons, and electrons in an ion. We'll be using the periodic table to help us out, so don't miss it! If you're looking to learn about atomic and nuclear...
Curated Video
Molecules, compounds and types of chemical bonds
What is the difference between a molecule and a compound? What are the main types of chemical bonds? In this video, we will be answering those questions and more.
Curated Video
How lasers are used to treat cancer
In medicine, we use different types of lasers to fight cancer. In this video, we will learn everything about carbon dioxide (CO2), argon and neodymium: yttrium aluminum garnet (Nd:YAG) lasers and how they are used to treat cancer in a...
Curated Video
Cations and Anions Explained - What's the difference?!
Ions are all around you and in many of the products and substances you encounter on a daily basis. Being able to determine the identity and difference between cations and anions is important for success in chemistry and physical science....
Curated Video
Atoms and Molecules - what is the difference??
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. Molecules...
Curated Video
Chemistry - The Mole Explained - What is Avogadro's Number?!
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...
Science ABC
How Does a Light Bulb Work?
An incandescent bulb mainly consists of two parts—the bulb and the filament. The bulb is generally made of glass, within which is a vacuum. The filament inside the bulb is where the actual light is produced. It is made of a long and...