Water Sort
Water Sort
The test tube, which scientists still use today, is credited to Swedish chemist Jöns Jacob Berzelius in the 1820s. Prior to that, chemists used various glasses that you could drink from, until Jöns created his slender, cylindrical device. We believe he would love the online puzzle game Water Sort, in which the objective is to fill the beakers with liquids of the same color.
The nice thing about this game is that it doesn't require any kind of test tube clamp like the ones you may find in a scientific classroom, safety goggles, or even a white coat. Even though these are all significant and necessary objects in the real world, playing with these test tubes without any safety gear is completely safe. It's quite easy to play: just tap the test tube you want to pour water into and then tap the test tube you want to pour water from. That part is simple. The tricky part is that you have to figure out which order to execute the different colored water separations and pour them into separate test tubes. The process will become more difficult if you have to pour the majority of each back into its original tube in order to reach the tiny bit at the base of the other tube. You may pour a small amount from each tube at first.