What do the lines around the finger of the doorknob represent?

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount

Which statement best describes the he properties of iconic compounds ?

The semi-conductors on the periodic table are classified as