Synthesis reaction is a reaction where two or
more substances combine to form a new compound. <span>It
is a reaction which releases energy in the form of heat and light. Therefore,
it is an exothermic reaction. </span>From its the definition the correct answer is the third option where carbon dioxide and water combine to form carbonic acid.
B 2
is which shell are the valence electrons of the elements in period 2 found
Answer:
they become water vapor and after that, they become a type of precipitation
