In a creek bed you find smooth rocks of all sizes. What could explain this? A. A chemical change has occurred in these rocks.
B. Water has dissolved the outer layers of rocks.
C. When rocks are transported by water, abrasion occurs as they rub and bump into each other.
D. The types of rocks in streams are not as hard as other rocks.

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

What is the mass of 4 molecules of co2

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.