PLEAS HELPPP I BEGGG FOR HELPPP EVERBODY
The oxygen atom oxidizes stains to form molecules.
A) covalent B) ionic C) colorless D) colorful

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?

Is this correct if not can u correct me

Use the drop-down menus to label each of the following changes p for physical change and c for chemical change. the substance changes to a new substance. the original substance can be recovered. the color changes. gas is produced and given off. the substance changes size, shape, or volume.