Which of the following is a physical change? a. burning a piece of wood b. sawing a piece of wood in half c. rust forming on an iron fence d. a copper roof changing color from orange to green

Is this a scientific model? use complete sentences to explain why or why not. a graphic organizer showing the water cycle

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.