Question

1. name of this substance; cao?

a) calcium oxide
b) calcium hydride
c) cadmium hydroxide
d) calcium hydroxide

Explanation:

Identify the elements in the chemical formula

\(\text{Ca}\) is calcium and \(\text{O}\) is oxygen.

Determine the ionic compound name

Calcium is a metal and oxygen is a nonmetal, forming an ionic compound where the anion ending is changed to "-ide", resulting in calcium oxide.

Answer:

• A) calcium oxide (Correct answer)
• B) calcium hydride
• C) cadmium hydroxide
• D) calcium hydroxide