(i will medal and fan). what statement applies to the horizontal rows or periods in the periodic table? . . . . . a. the properties are all the same. . . . . b. the elements have the same number of electrons. . . . . c. the properties change going across each row. . . . . d. the elements in each row combine easily.

Someone, part 1: which compound does c represent? part 2: name a process that could release this compound into the air. part 3: explain how the elements that form it are conserved during the carbon cycle. use complete sentences to explain your answer. justify how this compound was created from a recycling of carbon in the carbon cycle. use complete sentences to explain your answer.

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled