Question

In the following equation, what does the "(s)" symbol represent?

Ca(s) + O₂(g) → ___CaO(aq)
O That the substance Ca is a sandwhich
O That the substance Ca is measured in seconds.
O That the substance Ca is a solid.
O That the substance Ca is a solution.

Answer 1

That the substance Ca is a solid.

Step-by-step explanation:

The subscript (s) indicates that the reactant or product is in a solid state. Other common subscripts are

(aq): aqueous solution

(g): gaseous

(l): liquid water