Why must the surface of a mineral be different color than the interior of the mineral?

What is a group in the periodic table of elements? Question 4 options: the elements that have the same atomic number the elements that have similar densities and atomic sizes the elements that are in the same column of the periodic table of elements

Sara's mom takes the parkway to work. It takes her 30 minutes to travel from mile to maker 88 where she enters her exit mile maker 121. What is her average speed?

State one conclusion about atomic structure based on the observation that almost all alpha particles passed straight through the foil

Iron has a density of 7.87 g/cm3, and the mass of an iron atom is 9.27 1026 kg. if the atoms are spherical and tightly packed, (a) what is the volume of an iron atom and (b) what is the distance between the centers of adjacent atoms?

Why is it important for us to study outer space?

How many moles of co2 are produced when 10 mol of propane (c3h8) is burned in excess oxygen?

Why are the spheres representing nitrogen and oxygen different colors

How many moles are in 16.94g of water?

Two compound samples are found to have the same mass percentages of the same elements. what can you conclude about the two samples

Sodium hypochlorite (Na xCl yO z) is the active ingredient in household bleach. A 250.0 g sample of sodium hypochlorite contains 77.2 g sodium, 119.1 g chlorine, and the remainder is oxygen. Calculate the empirical formula of sodium hypochlorite.