Which of the following is the best hypothesis? A. Chemical reactions and physical reactions are interesting to watch B. How does wood change when it burns in a campfire? C. During a chemical reaction, the total mass of material does not change D. Chemical reactions are easier to identify than physical reactions

The diagram below shows a cell placed in a solution.a cell is shown placed inside a beaker. it is labeled cell. the solution inside the beaker is labeled 40% salt solution and the solution inside the cell is labeled 20% salt solution.only water is allowed to move in and out of the cell. what will most likely happen to the cell? it will expand as water moves out of it. it will shrink as water moves out of it.it will expand as water moves into it. it will shrink as water moves into it.

Asolid that forms and separates from a liquid mixture is called

How do dying stars contribute to the formation of planets