The atom can be broken down into smaller parts. what are the smaller parts? how are atoms of hydrogen identical to each other, a
nd how can they be different from each other? how are atoms of hydrogen different from atoms of helium? how can atoms be similar to atoms? how is water different from hydrogen peroxide even though both compounds are composed of only hydrogen and oxygen? what happens in a chemical reaction, and why is mass conserved in a chemical reaction?
The
mass of an atom comes from the protons and neutrons that are found in the
nucleus. The number of protons is the atomic number of an element. To find the
number of neutrons, subtract the atomic number from the mass of an atom. The number of atoms of an
individual element be determined by using a chemical formula and adding all of
the subscripts together after the reaction is complete. The key in the balancing of chemical reaction is to make sure that you got the
exact chemical formula of the substance that is reacting and the yielded
product. After getting the formula, identify first the hardest element/atom to
be balanced such as Na, Zn, Cl, C, O, etc. Then proceed to the easier ones such
as O, H. Make sure to note the atoms present in the molecule of the substance.
It covers changes to the position of equilibrium if you change concentration, pressure or temperature. ... If a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium moves to counteract the change
