Now first= which statement describes the difference between an atom of silver and an atom of gold? a. they have the same number of electrons. b. the atomic numbers are the same. c. their atomic masses are different. d. they have exactly the same isotopes.

Which fact represents evidence for the big bang theory?

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.

Which of the following is not an assumption that scientists must make about the natural world? a. regularity b. causality c. predictability d. plausibility