All I need is 6 7 8 can you help me thank you!

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

Which of the following is true about a carbonated soft drink? . the carbon dioxide is the solvent, and water is the solute.. the water is the solution, and carbon dioxide is the solvent.. the carbon dioxide is the solution, and the water is the solvent.. the water is the solvent, and the carbon dioxide is the solute.. .

State one important difference between a physical change and a chemical change?