Chemistry CBA#2 Review

Front

How many dots are shown in the Lewis dot structure for chlorine?

Back

7

Front

What is the molar mass of NaCl?

Back

58.44 g/mol

Front

Which subatomic particle is found in the electron cloud surrounding the nucleus of an atom?

Back

Electron

Front

Dmitri Mendeleev arranged the 63 known elements at the time by __________________.

Back

atomic mass

Front

What is the maximum number of valence electrons an element can have?

Back

8

Front

What is the definition of a Lewis dot structure?

Back

A diagram that shows the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule.

Front

What is the atomic mass unit (amu)?

Back

A unit of mass used to express atomic and molecular weights, defined as one twelfth of the mass of a carbon-12 atom.

Front

What is the significance of valence electrons in chemical bonding?

Back

Valence electrons determine how an atom can bond with other atoms, influencing the formation of molecules.

Front

What is the periodic law?

Back

The properties of elements are a periodic function of their atomic numbers.

Front

What is the difference between an ionic bond and a covalent bond?

Back

An ionic bond is formed through the transfer of electrons, while a covalent bond is formed through the sharing of electrons.