Chemical Bonding Part 1

What do the subscripts in a chemical formula represent?

• The amount of moles in a substance

• number of atoms of each kind is indicated by a subscript following the atom

• Charge of an element

• location of element on periodic table

For an ionic compound, the ________________ is listed before the _____________________

• Metal, Nonmetal

• Metal, Metal

• Nonmetal, Nonmetal

• Metal, Metalloid

What are parentheses in a chemical formula used for?

• Separate the nonmetals from the metals

• parentheses are used to form subgroups of atoms within a molecule

• Depict which type of bond is represented in the compound

• determine whether it is an ionic or covalent compound

What does a coefficient in a chemical formula represent?

• the number that determines that the compound is ionic or covalent

• parentheses to form subgroups of atoms within a molecule

• the number placed in front of a chemical formula that multiply all the atoms in a formula

For the symbol Ga₂(SO₄)₃ , how many total atoms are present?

• 9 atoms

• 14 atoms

• 17 atoms

• 15

Identify how many oxygen atoms are present in 2 Ba3(PO4)2

• 8

• 6

• 16

• 12

Identify how many Phosphorous atoms are present in 2 Ba3(PO4)2

• 4

• 6

• 14

• 12

Identify which elements are ionic(Check all that apply)

• NO₂

• NaCl

• PI₃

• AlF₃

Identify which elements are covalent compounds(Check all that apply)

• NO₂

• NaCl

• PI₃

• AlF₃

which compounds are ionic compounds(check all that apply)

• O₂

• CuCl₂

• Aluminum phosphate

• Dinitrogen trioxide

• Nitrogen tribromide