Question

enter the formula for the compound that forms from calcium and carbonate. express your answer as a chemical formula. a chemical reaction does not occur for this question.

Explanation:

Step1: Determine ion charges

Calcium (Ca) forms \( Ca^{2+} \) ion (group 2 metal, loses 2 electrons). Carbonate is \( CO_3^{2-} \) polyatomic ion.

Step2: Balance charges

The positive charge of \( Ca^{2+} \) (2+) and negative charge of \( CO_3^{2-} \) (2-) balance in a 1:1 ratio. So the formula is \( CaCO_3 \).

Answer:

\( CaCO_3 \)