Which type of bond results when one or more valence electrons are transferred from one atom to another?
(1) a hydrogen bond
(2) an ionic bond
(3) a nonpolar covalent bond
(4) a polar covalent bond

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

What happens when light is scattered?

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?