Fall Exam Bank

Front

A bond in which an electron pair is equally shared by two atoms is ___

Back

non-polar covalent

Front

Which statement best describes the density of an atom’s nucleus?

Back

The nucleus occupies very little of the atom’s volume but contains most of its mass.

Front

The letter on the chart for the alkali family of elements is ___

Back

W

Front

All of the following species are isoelectronic except: K1+, Mg2+, Ne, O2–

Back

K1+

Front

Determine which of the following represents a physical change: (Provide examples)

Back

Examples include melting ice, boiling water, and dissolving sugar in water.

Front

What is the definition of ionization energy?

Back

Ionization energy is the energy required to remove an electron from an atom in its gaseous state.

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

Define isoelectronic species.

Back

Isoelectronic species are atoms or ions that have the same number of electrons.

Front

What is the significance of the atomic number?

Back

The atomic number defines the number of protons in an atom and determines the element's identity.

Front

Explain the concept of density in relation to matter.

Back

Density is the mass of an object divided by its volume, indicating how closely packed the matter is.