What do the groups on the periodic table tell you about the element in that group? what about periods, what do they tell us about each element?

Stars x and y are both bluish main sequence stars. star x has a higher absolute brightness than star y. how do the two stars compare? explain

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter