Valence determines an atoms

You jogged for 2.1 miles, how many feet did you jog?

What are observable changes when burning a log?

In the ionic compound calcium chloride, how many chlorine ions are there for each calcium ion?

Decide whether each molecule or polyatomic ion is polar or nonpolar. If the molecule or polyatomic ion is polar, write the chemical symbol of the atom closest to the negative side.

Aplique ley de la conservacion de la masa en Na2O + (NH4) 2SO4 + H2O + NH3

Chemical or physical properties? titanium is less dense than water

Choose the element that would be the most reactive of the three. A. K c. Na b. Fr

Explain why iron structures need protection from corrosion while aluminium structures do not?

What is the charge associated with each side of the HI molecule? What is the percent ionic character of the H-I bond?

Write the symbol for the ion formed when each element gains electrons and attains a noble-gas electron configuration. Br, H, Se.