For each of the following sets of elements, state whether all of the elements are in the same group, the same period, or neither the same group or the same period. a. Fe, Ru, Os
b. Rh, Pd, Ag
c. Sn, As, S
d. Se, Te, Po

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

What determines the average kinetic energy of the particles in a gas? a. the number of collisions b. the number of particles c. the size of the particles d. the temperature

Which statement best explains the relationship between an area is geography and the temperature of its surface water