Things You'll Need

Instructions

Make Casual Smoke Screens

1

Pour the water in the tub.
2

Put the dry ice in the water, using mitts to protect your hands.
3

Mix the water and dry ice or use a ladle to spoon the water over it. In the tub, the water (H2O) combines with the dry ice (CO2) to make carbonic acid (H2CO3).

Make MacGyver's Smoke Screen

1

Put on the gas mask and goggles. The fumes from this reaction are toxic so be sure to wear your safety equipment and perform the experiment in a well ventilated area.
2

Pour a small amount of ammonia into the tub.
3

Add some hydrochloric acid and stand back until the reaction is finished. In the reaction, the ammonia (NH3) combines with the hydrochloric acid (HCl) to create ammonium chloride (NH4Cl).