small, compact core consisting of protons and neutrons
C) A) Nucleus
clouds of negative charge that surround the nucleus
B) Electrons
number of protons which identifies the element
B) Atomic number
total number of protons and neutrons
C) Mass number
the same element (same number of protons) but differ in number of neutrons (and mass number)
A) Isotopes
atoms carrying a positive (cation) or negative (anion) charge
Monatomic ions
combination of symbols used to represent a compound. It indicates the elements present and the relative numbers of atoms of each element in the compound
C) Chemical formula
relative ratio between the numbers of atoms of the different elements present
B) Empirical formula
chemical formulas that indicate the actual numbers and types of atoms in a molecule
A) Molecular formula
combination of metal (cation) and nonmetal (anion) bound by electrostatic forces of attraction
D) Ionic compound
composed of nonmetals
A) Molecular compound
the sum of the atomic weights of atoms shown in the chemical formula
C) Formula weight
the sum of the atomic weights of the atoms in the molecule as shown in the molecular formula