Zoe is investigating the composition of substance A, an unknown substance. Using chemical processes, she analyzes substance A am determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1:1:1. What is substance A?

After cloud droplets form, what must happen to them for precipitation to occur?

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

What happens when an atom of sulfur combines with two atoms of chlorine to produce sci2? a. each chlorine atom shares a pair of electrons with the sulfur atom. b. an electron is transferred from each chlorine atom to the sulfur atom. c. an electron is transferred from the sulfur atom to each chlorine atom. d. each chlorine atom shares all its valence electrons with the sulfur atom.