If you don’t have enough of each color, each group can make its own color key for ... Use the animation to show students a ball model of a hydrogen peroxide molecule (H 2 O 2) and post the hydrogen ...
These polar areas are shown with a + near the hydrogen atom and a − near the oxygen ... The oil is non-polar and does not dissolve the color or sugar. This is a ball-and-stick model of citric acid.
A pair of geologists with the U.S. Geological Survey, Denver, has created a model that shows Earth's subsurface may hold up to 5.6 × 10 6 million metric tons of natural hydrogen. In their study ...