Two plus two is four, but how can two liquids come together and form one solid? Learn how ions can mix in solutions and fall out to form a solid in precipitation reactions through discussion and analysis of cations, anions, and...

Physical science fans find out how supercooled water droplets in the clouds can become crystalline snowflakes. They learn about the categories of snowflakes (plates and columns) and the variables that determine their patterns...

There is no narration in this video, just footage of a hand performing a chemical reaction set to magic-show-style music. Starting mass is shown in text. Solutions are mixed so that a precipitate forms, and then ending mass is shown....

The oceans contribute 37 trillion tons of water to land masses in the form of rain and snow. The third in a four-part series from NASA show satellite animations highlighting the precipitation on Earth. The videos show the movement of the...

After reviewing the water cycle, zoom in on a raindrop and learn about the physics determining its shape. See actual footage of raindrops falling with high-speed photography! A written description of the same information is also provided...

Here is a video that is a double displacement delight! Show young scientists how to tackle the longest (and most interesting) chemical reactions to write with a video from JFR Science. The narrator shows examples of double displacement...

Have you built your home on the slopes of Mount Vesuvius? Why not? Friedrich Nietzsche challenges viewers to live a fulfilled and dangerous life, to use the humanities as a guide to life, and to own up to one's envy, as explained in...

What is soap scum, and why does it form? Explore hard versus soft water with a video from JFR Science. The narrator explains why someone might have hard water, the factors that affect ion solubility, and how a water softener addresses...

A lot of ionic compounds dissolve in water, dissociating into individual ions. But when two ions find each other that form an insoluble compound, they suddenly fall out of solution in what's called a precipitation reaction. In this...

A lot of ionic compounds dissolve in water, dissociating into individual ions. But when two ions find each other that form an insoluble compound, they suddenly fall out of solution in what's called a precipitation reaction. In this...

A lot of ionic compounds dissolve in water, dissociating into individual ions. But when two ions that find each other form an insoluble compound, they suddenly fall out of solution in what's called a precipitation reaction. In this...

In this video, Paul Andersen describes both weather and climate. Weather refers to the day-to-day conditions on the Earth's surface, including temperature, wind, humidity, air pressure, and precipitation. Climate means the long-term...