Chemical Formulas
CO2
What is the chemcial formula for carbon dioxide?
have different chemical and physical properties than those of the elements it is made from.
What is a compound?
Methane's chemical formula is CH4.
What does the 4 tell you?How many hydrogen atoms are in the compound?
H2O
What is the chemical formula for water?
has partial positive end and partial negative end due to unequal sharing of electrons.
What is a polar molecule?
Have low melting and boiling points, usually a gas or liquid at room temperature.
What are characteristics of covalent bonds?
NaCl
What is the chemical formula for table salt?
has equal electron attraction between atoms.
What is a nonpolar molecule?
Molecular hydrogen
What is a single covalent bond?
shows the total number of atoms in a compound, but not the shape or appearance of that molecule.
What is a chemical formula?
Two atoms share TWO pair of valence electrons.
What is a DOUBLE covalent bond?
Shows the shape and appearance of a compound
What is a molecular model?
Two atoms share THREE pairs of valence electrons.
What is a triple covalent bond?