State the number of electrons, neutrons
and protons found in Na, F, CI, Mg and
H.

Explanation:

The electrons and protons in Na is 11 and neutrons is 12. In F electron and proton is 9 and neutron is 10. In Cl electron and proton is 17 and neutron is 18. In Mg electron and proton is 12 and neutron is also 12. In H electron and proton is 1 and neutron is 0

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.