If you are heating something, you can step away for a moment, as long as you come back very quickly. a. True
b. False

b. False

Explanation:

The more energetic molecules move to a gas, spread out, and form bubbles when heating happens. When exposed to heat, many of the chemicals used in the laboratory are volatile and harmful (fire).

So leaving a material that you heat for even a second can be very hazardous and negligent.

increased stability in the completion of fluorine's outer shell.