Explain what occurs when an electron is given energy from an outside source.

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

All motion is caused by force? true or false

Acandle’s wick is the fabric string that holds the flame, and it burns down at a constant slow pace when the candle is lit. the wick is usually surrounded by wax. which is the most important property of covalent compounds that makes them useful for making candle wax? a low boiling point a low melting point a high boiling point a high melting point