When electrons gain energy, what can they do?

A. drop to a lower energy level

B. move to a higher energy level

The whale shark has rows of teeth despite being a filter feeder. What's the best explanation of this feature? A. The whale shark's teeth are an example of vestigial structures.

Is blood acid base or neutral

How much does copernicium cost?

Identify the number and type of atoms in the following molecules. Nitrogen, Oxygen, Ozone, Phosphorus, Sulfur.

Identify the missing reagents 1 & 2; draw the final organic product (s) c.

What causes dipole interactions

What do holes in volcanic rock illustrate about the conditions in which

Susan dropped a nail into a graduated cylinder filled with water. She then recorded the number of millimeters the water rose in the cylinder. Which property of the nail can be determined by the change in height of the water?

Por que un solido mantiene su forma?

Where are electrons most likely to be found in the cloud?