valence electrons
Protons and neutrons have about the same mass.
an exothermic reaction
David Hume (1711-1776) was a Scottish philosopher whose sceptical philosophy restricted human knowledge to that which can be perceived by the senses. This is known as empiricism.
The periodic table is arranged in periods and groups; elements are placed in the ascending order of the atomic number. The law of periodicity from Mendeleev is respected.
Christian wolff
socialism
Ludwig wittgenstein
logical positivism
The change in which no new kinds of matter are formed but the size, shape or state of the matter may change is known as a physical change.
Ionic compounds are composed of negatively and positively charged atoms.
No. If the number of H+ and OH- ions are equal then the solution is neutral. A solution is considered alkaline if it has more OH- ions than H+ ions.
The term that best defines two or more atoms joined by a chemical bond, is a covalent bond.
The "ingredients" of a reaction are called reactants, and the end results are called products.