Which element has the same number of valence electrons as bromine (Br)? A. Astatine (At)
B. Krypton (Kr)
C. selenium (Se)
D. ytterbium (Yb)

Two liquids are shaken together in a test tube to produce a mixture that quickly separates into two layers. which of the following best describes the behavior of the above pair of substances? soluble insoluble miscible immiscible

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

All forces cause motion? true or false