Answer:
<em>A process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in</em> <u><em>physical form or a nuclear reaction.</em></u>
Explanation:
A process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in <u><em>physical form or a nuclear reaction.</em></u>
Answer:
2nd one down
Explanation: distance divided by time interval
Old but good do a volcano <span />
Answer: H2 + Cl2 => 2 HCl
Explanation: Each individual atom is already balanced.