Matter is composed of atoms, and atoms have three basic building blocks: protons, neutrons, and electrons. Protons have a positive charge, and neutrons have no charge. Protons and neutrons are in the nucleus of the atom. Electrons whiz around the center of the atom forming the electron cloud. Electrons have a negative charge. Play this puzzle to see if you can correctly label the parts of an atom.
Download the puzzle file: Open this link on your iPad and then choose to Open in Stick Around. You need to have Stick Around installed on your iPad in order to play this puzzle. Download Stick Around from the App Store.
What's better than playing a puzzle? Creating one yourself! You can of course start a puzzle like the one above from scratch inside Stick Around. In case you'd like change the puzzle above, download the project file.