Students tilt the bag and see that the liquids move down the plastic at different rates. Finally, students see a demonstration in which a drop of food coloring is placed in each liquid and students ...

Place about ½ teaspoon of each liquid in its labeled cup. On a stiff piece of paper, label three areas Water, Oil, and Corn syrup. Place the card in a zip-closing plastic bag and seal the bag. Using ...

It is not the first U.K. airport to drop the rule that has been in place ... their bags as they head through security—any dangerous liquids in baggage can be identified in seconds by the ...