What conditions favor the formation of ionic compounds from elements? a) both atoms must be nonmetals b) a metal and a nonmetal c) both atoms must be metals d) a metal atom and a noble gas atom

Why do cells appear different in distilled water than they do in 10% salt water?

In most resting cells, the concentration of sodium ions is higher outside of cells compared with the intracellular fluid. when cells are stimulated, sodium ion channels open, and sodium diffuses from the outside of the cell to the inside of the cell. sodium ion concentrations in a resting cell are an example of and sodium ion movement in a stimulated cell is an example of in most resting cells, the concentration of sodium ions is higher outside of cells compared with the intracellular fluid. when cells are stimulated, sodium ion channels open, and sodium diffuses from the outside of the cell to the inside of the cell. sodium ion concentrations in a resting cell are an example of and sodium ion movement in a stimulated cell is an example of potential energy; kinetic energy kinetic energy; potential energy the energy of motion; stored energy chemical work; energy stored in chemical bonds

What mineral is this? color: varies streak: colorless indistinct/fracture luster: non fluoresces