Where are atoms that tend to gain electrons located in the periodic table of the elements?
a. on the left side
b. on the right side
c. in the middle columns
d. starting on the fourth row

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line