Answer:
At
Explanation:
atomic mass increases as you go down a group
D, carbon dioxide and water. Methane and oxygen PRODUCE carbon dioxide and water in their reaction.
Answer:
B.
Explanation:
Valence electrons located in the outermost energy level.
Answer:
c. crystallization
Explanation:
The opposing process that occur in a solution in contact with undissolved solute are dissolution and crystallization.
In the dissolution process the solid substance coverts into liquid state and mixes with solution. Whereas in Crystallization the the chemical is converted from the liquid solution to solid crystal state.