Which of the following elements will form an ion net charge of - 3

A. Aluminum B. Selenium C. Oxygen D. Phosphorus E. none of these

How does density of air related to elevation (altitude)

Which of these describes something that happens as a pilot gets closer to the speed of sound?

Use the real number line shown below to complete each statement.

What kind of changes occur between atoms when substances undergo chemical reactions?

1 Compared to the charge of a proton, the charge of all electron has (1) a greater magnitude and the same sign (2) a greater magnitude and the opposite sign (3) the same magnitude and the same sign (4) the same magnitude and the opposite sign

Aluminum is more reactive than iron, yet it is used today for a variety of applications in which iron would corrode (cans, rain gutters, etc.).

Identify three types of coral reefs

A low pKa means the acid the strong. < - - - Is that right?

Does the buckminsterfullerene conduct electricity?

If an element has 2 valence electrons, how many dots will be in the elements dot diagram?