Whats a pure substance that can not be broken down into any other substances?

What is the nature of this chlorine ion?

In the first stage of cell reproduction the Disappears

Where is the mass of a black hole located

Inner transition metals are composed of which of the following? noble gases halogens metals lanthanides and actinides

Semantics is the study of:

What is true of an acidic solution at room temperature?

Why does a higher concentration make a reaction faster? There are more collisions per second and the collisions are of greater energy. Collisions occur with greater energy. There are more collisions per second.

A property of metals is high thermal conductivity which is

Do exorthermic reactions make surrounding hotter?

What's a certain indicator that a molecule is polar?