Write an article based on this "Gather your materials. Cut 2 4-inch (10.2-centimeter) strips of masking tape. Remove 5 to 7 Mentos from the roll. Lay the Mentos on to one of the 4-inch (10.2-centimeter) strips of tape. Place the other 4-inch (10.2-centimeter) strip of tape on top of the Mentos. Cut a 3-inch (7.62-centimeter) strip of masking tape and roll it around your finger, sticky side out. Attach the rolled tape to the top of the Mentos. Fasten the Mentos cartridge into the bottom of the Diet Coke cap. Double tape the cartridge to the cap."
Bring your 2-liter bottle of Diet Coke, your pack of Mentos, your masking tape, and your safety goggles to wherever you've decided to build your rocket. Place the strips of tape on a flat surface, with their sticky sides facing up. Do not allow them to stick together. The more Mentos you use, the better the explosion; however, you don't want to the Mentos to dip too far into the Diet Coke otherwise the explosion may begin before you can screw the lid on the bottle. They should look just as they did when they were still in their original packaging: stacked on top of one another like a roll of coins. Be sure to leave the sides of the Mentos exposed. You'll use this piece to attach the Mentos to the bottle cap, so ensure that it's small enough to fit inside the cap. Take the 3-inch strip of sticky rolled tape that you've just created and attach it to the top of the taped roll of Mentos. This will create a ”loaded” Mentos cartridge that you can place inside the Diet Coke bottle. Put the cap on a flat surface, with its inside facing upwards. Place the Mentos cartridge, sticky-tape side up, into the soda cap and press down to fasten it there. Be careful not to press too hard, as you don't want any Mentos falling out of the cartridge! This step is optional. If you're worried about the Mentos prematurely falling into the Diet Coke, you can secure the cartridge by running one more piece of masking tape around the entire roll, including the cap.