CP Chemistry Unit 2 Practice Test

Front

What is the Bohr model of an atom?

Back

The Bohr model describes the atom as having electrons in specific energy levels or orbits around the nucleus, with each level corresponding to a fixed energy.

Front

What is the maximum number of electrons in the second energy level of an atom?

Back

The maximum number of electrons in the second energy level is 8.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

How can you determine the number of valence electrons in an element?

Back

The number of valence electrons can be determined from the group number of the element in the periodic table.

Front

What is the significance of isotopes in chemistry?

Back

Isotopes are atoms of the same element with different numbers of neutrons, which can affect the stability and properties of the element.

Front

What is shorthand electron configuration?

Back

Shorthand electron configuration is a method of representing the distribution of electrons in an atom using the nearest noble gas as a reference.

Front

What is the electron configuration for a sulfur atom?

Back

The electron configuration for a sulfur atom is [Ne] 3s² 3p⁴.

Front

What is the difference between an ion and an isotope?

Back

An ion is an atom that has gained or lost electrons, resulting in a charge, while an isotope is an atom with the same number of protons but a different number of neutrons.

Front

What is the term for the number of protons in an atom?

Back

The number of protons in an atom is called the atomic number.

Front

What is the relationship between the period of an element and its electron configuration?

Back

The period of an element indicates the highest energy level that contains electrons in its electron configuration.