Chemistry Chapter 7 Review

Front

What are oxidation numbers used to indicate?

Back

The distribution of electrons among the bonded particles in a compound.

Front

What is the empirical formula for a compound that contains 12.62% Li, 29.17% S, and 58.21% O?

Back

Li₂SO₄

Front

What follows an element’s symbol in a chemical formula to indicate the number of atoms of that element in one molecule of the compound?

Back

Subscripted number.

Front

What is the molar mass of pure tin?

Back

118.71 g/mol.

Front

In what type of substance do atoms have an oxidation number of zero?

Back

Pure element.

Front

Define empirical formula.

Back

The simplest whole-number ratio of atoms of each element in a compound.

Front

What is a chemical formula?

Back

A representation of a substance using symbols for its constituent elements and numbers to indicate the ratio of atoms.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

What is the significance of subscripts in a chemical formula?

Back

They indicate the number of atoms of each element in a molecule.

Front

What is the molar mass of a compound?

Back

The mass of one mole of a substance, calculated by adding the atomic masses of all atoms in the formula.