Wengie and Wendy conduct a series of science experiments in a video. They demonstrate how to make invisible water, hydrogen balloons, a ghost flame, a sand monster, and bubbles inside bubbles. They also show how to make a milky rainbow and conduct a MacBook Air giveaway. The video ends with shoutouts to members of their notification squad and followers on social media.
**Key Facts:**
1. Wengie and Wendy host a science experiment video.
2. Invisible water can be created using baking soda and vinegar.
3. Hydrogen balloons can be made with aluminum foil, drain cleaner, and water.
4. A ghost flame effect can be achieved with a modified lighter using ink from a pen.
5. A monster can be summoned using sand, baking soda, sugar, and lighter fluid.
6. Teabags can be turned into rockets by igniting them.
7. Water can be poured through a teabag with holes without spilling.
8. Bubbles inside bubbles can be created with a mixture of dishwashing detergent, glycerine, and water.
9. Wendy wins a bubble competition against Wengie.
10. A milky rainbow effect is produced using milk, food dye, and dishwashing detergent.
11. The video concludes with a MacBook Air giveaway announcement and social media engagement instructions.