I put a spatula of blue crystals in a beaker of water, the water turned blue. Is this a physical or chemical change?

Any info on neptunes spot? i need it for a project.

During chemistry class, carl performed several lab tests on two white solids. the results of three tests are seen in the data table. based on this data, carl has concluded that substance b must have bonds.

What are transitions between a liquid and a solid called? identify which way they are transitioning