Hey your hand look heavy can I hold them ?

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 of the following is not true about the atomic model of substances?

How can the number of core electrons be determined from the periodic table