Which sequence correctly ranks elements from largest to smallest atomic radius? Select one:

Mg, Ca, Ba

F, S, As

Br, As, K

Cs, Ba, At

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

The volume of an unknown substance in a sealed glass jar is 50 milliliters. the volume of the jar is 200 milliliters. which state of matter could the substance be?

How can parts of a solution be separated by chromatography?