A certain skin lotion is a fine mixture of water and various oils. This lotion is cloudy and cannot be separated into oil and wa
ter by filtration. Moreover, its components do not separate when left standing. What type of mixture is it? A.
solution
B.
suspension
C.
colloid
D.
compound
D. The number of electrons equals the atomic number for a neutral element. Each number after the letter refers to the number of electrons in that shell. So for D, 2+2+6+2+6+2 = 20 electrons, which is equal to the atomic number.
