Negative ions are usually formed from: metals nonmetals

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

What energy conversion occurs when a sling shot is used to shoot a rock across the room? (2 points) question 2 options: 1) stored mechanical energy is converted to mechanical energy. 2) stored mechanical energy is converted to radiant energy. 3) gravitational energy is converted to radiant energy. 4) gravitational energy is converted to mechanical energy.

What is the chemical name of the compound ti2o3?