The pH scale measures how acidic or basic a substance is. It ranges from 0 to 14. If a pH is lower than 7 it indicates the solution is an acid. If it is above 7 it is a base or Alkaline. If a pH is a 7 it is neutral. Strong acids have lower pHs than weak acids and strong bases have lower pHs than weak bases. A neutral solution is neither an acid or base. It has a pH of 7.
Structure of a Methane Molecule:
A carbon atom has 4 electrons in its outer shell. Carbon is in group 4 of the periodic table. A hydrogen atom has 1 electron in its outer shell. Hydrogen can only form 1 bond. Four hydrogen atoms will each share their 1 electron with carbon to form four covalent bonds and make a methane molecule (CH4).
Structure of ETHYLENE
Chemical Names: ETHYLENE; Ethene; Acetene; Elayl; Olefiant gas; Athylen
Molecular Formula: (C2H4)n or undefined or C2H4
Structure of Ethyne:
