So, rocks are hard. But the scale we use to rank them, the Mohs scale, is only really good at quantifying that for one kind of hardness, and topaz is a perfect stone to talk about to explain that. And you can check it out in our SciShow...

In this explosive episode of SciShow Quiz Show, Hank Green and SciShow writer Dave Loos test their knowledge of diamonds, the environment, and the many reasons why humans are very strange creatures.

Band Theory Dissection: Conduction in Various Substances

The band theory of solids is a fundamental concept in solid-state physics that explains the conduction of electricity in substances based on the arrangement of energy levels...

Here, we will determine the best split at any decision node where information is maximum and split into two branches, true and false.
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This clip is from the chapter "Random Forest Step-by-Step" of the series "Machine Learning:...

Like all dataset characteristics, we will look at the impurities in a dataset and how they should be minimum in a good dataset.
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This clip is from the chapter "Random Forest Step-by-Step" of the series "Machine Learning:...

In this video, we will define columns for questioning and determine how much information can be gained by splitting a column.
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This clip is from the chapter "Random Forest Step-by-Step" of the series "Machine Learning: Random...

In this video, we will define columns for questioning and determine how much information can be gained by splitting a column.
<
br/>
This clip is from the chapter "Random Forest Step-by-Step" of the series "Machine Learning: Random...

Like all dataset characteristics, we will look at the impurities in a dataset and how they should be minimum in a good dataset.
<
br/>
This clip is from the chapter "Random Forest Step-by-Step" of the series "Machine Learning:...

Here, we will determine the best split at any decision node where information is maximum and split into two branches, true and false.
<
br/>
This clip is from the chapter "Random Forest Step-by-Step" of the series "Machine Learning:...

Now that we have covered a variety of separation techniques, we know how to get an isolated product! But if it's a solid, it may contain impurities. Recrystallization is a common organic chemistry laboratory technique for the...

We know that liquids and gases can form mixtures, but did you know that solids can, too? Even metals! Mixtures of metals are called alloys, and they have tremendous technological application. What is the structure of an alloy? Are there...