Name the techniques which are suitable for separating the following mixture: To determine whether the colouring in a fruit juice is a single substance or a mixture of coloured substance

The following transition occurs at a molecular level for a substance. what transition corresponds to this change in microscopic structure? the carbon dioxide molecules on the left are in a regular, tightly packed pattern. after heating, it becomes much lower density. a. melting b. boiling c. sublimation d. freezing