What is a "plate boundary" in your own words?

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.