I am not going to pretend I paid attention or remember anything from my school days in science class. It just wasn't something that entertained me or that I wanted to gain knowledge about.
Maybe, if there were other ways to approach what different elements were made up of and how they worked, I would have been more interested in listening. Enter Sokobond Express, a puzzler that slightly has to do with the elements.
This is done through creating a path, with the element (and anything it grabs onto) moving forward. Once you've used a block of the grid, you cannot go backwards through it or anything like that. At first, this is pretty easy combining oxygen with hydrogen to create H2O. After you complete each element and end the level, you do get a bit of facts about what you have created.
If an element is attached to your main element, you cannot hit it against another element in the map. You can go outside the grid, but actually running into another element will end your track. You can easily see when this is happening through the X on the line, showing where you've gotten caught.
I do think the simple yet clearly labelled things like this make Sokobond Express a fun challenge - you can instantly see where you've gone wrong before you even hit Play on the level to see how it pans out.
There also always seem to be at least two levels to choose from when it comes to the level select menu, so if you are really struggling, you can go out and select a different one. Some levels have a dotted like to a question mark, which means they will open up a new area, building on the previous mechanics you have played with. Soon, I found I needed to pick up the connection orb so that I could then actually grab another element, adding even more challenge.