Elements are placed into the same period on the periodic table of the elements because they
question 1 options:

form the same type of chemical bonds.

form the same type of isotopes.

have the same chemical properties.

have the same number of electron energy levels.

Match the correct terms to their descriptions a system in which only energy but not matter is exchanged frozen water in snow part of geosphere that includes only soil a thin layer between the troposphere and the stratosphere cryosphere tropopause closed system pedosphere