Question

making of dry ice from carbon dioxide gas is a chemical change or a physical change

Answer 1

It is a physical change because dry ice is co2 and when it turns into gas it is still co2 so no chemical change.

Answer 2

sublimation is when a solid turns directly to a gas without the liquid stage. it is a physical change. because dry ice is Co2. and when it turns into a gas its still co2 so no chemical change. however its not a solid anymore therefore physical change