the force of gravity will cause two different masses to

A to be attreacted to on another

B move away from one another

C orbit one anther

D repel one another

Elements with the same number of shells are called? All the element that have the same number of valence electrons and have similar physical and che. ical properties are called?

Which is a cause of chemical weathering

A student is studying the effects of several solutions on the prevention of the browning of apples. the student used solutions having different ph values and immersed three apple slices in equal volumes of each of the solutions.

Iron plus what equals iron chloride

Bases have a pH of a. more than 7 b. less than 7 c. 7

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?