In their third trip around the science sun, the science siblings pass by Chemistry again to see what's new. There's time for a quick brushing up on atomic structure to see what Laura has retained from last chemistry, and then it's on to new ground.

In order to look at the periodic table Ron needs to describe the difference between a row and a column, and then it all gets a bit dreamy as they look at how Mendeleev thought up the Periodic Table. Ron is his very patient best as he tries to work through the alkali metals explaining their different properties.

Interruptions this week include a cat, Laura, and a ghost ambulance.

An autogenerated transcript of this episode can be found on our blog: https://lexxeducation.blogspot.com/

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