<span>Synthesis, decomposition, single replacement and double replacement.</span>
Fe + O2 → Fe2O3
After balancing the eq.
4Fe + 3O2 → 2Fe2O3
Hope this will help u mate :)
Answer:
D. all of these are chemical changes
Voltage<span>, </span>also called<span> electromotive force, is a quantitative expression of the potential difference in charge between two points in an electrical field.
So ACTUALLY an "electromotive force", but of your answer choices.
D. Electrical Field Energy
</span>
Neon, Helium, Krypton, Xenon, Argon
