Hello, I know many may not be aware of the PhET simulations. These are a really great tool for using in online lessons for science and maths by sharing the screen and playing around with the simulations making the lesson more fun and engaging! I use the chemistry simulations all the time. You can rotate and create 3D molecules, play games with balancing reactions and simulate concentration and moles!
You can check it out here: https://phet.colorado.edu/