1 f
Ayon sa tula ang
konsensya ay
humuhubog ng
pagkatao. Ikaw
bilang isang tao
mahalaga ba na
mahubog ng tama
ang iyong
konsensya?​

it's c. elements are placed in rows based on how may valencies electrons have.

b. is the answer hoped i        

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.