Atomic Mass and Isotopic Abundance Quiz

What is the composition of a compound?

How are elements ordered by chemists?

What is the defining characteristic of a chemically homogeneous system?

What is the atomic number of an element?

What is the mass number of an atom?

What is the atomic mass unit (u) defined as?

What is the fundamental building block of matter?

What is the approximate size of the atomic radius of an atom?

What did John Dalton's Atomic Theory state?

What does isotopic abundance refer to?

What is the nucleus of an atom made of?

What is the most abundant element in the Earth's crust?

What does the atomic mass of an element represent?

What is the atomic and nuclear radii of an atom approximately?

What is the natural isotopic abundance and atomic mass used for?

Chemistry studies the composition of ______

The physical state with indefinite volume and shape is ______

An element is a substance made of only one type of ______

Chemically homogeneous systems are also known as ______

An atom consists of a nucleus made of protons and neutrons, with electrons rotating around it. The ________ and nuclear radii of an atom are approximately 10^-8 cm and 10^-13 cm, respectively.

The mass of an atom is the sum of its protons and neutrons, with isotopes of the same element containing different numbers of neutrons. The mass number is the sum of the number of neutrons and protons in an atom, while the ________ is the number of protons in the nucleus.

Isotopic abundance refers to the ratio of a specific isotope to the total number of atoms of an element, and it is essential for calculating the ______ weight of an element. The natural isotopic abundance and ______ mass of various elements, such as hydrogen, carbon, nitrogen, oxygen, silicon, sulfur, chlorine, and bromine. The ______ mass of an element is calculated as the sum of the natural isotopic abundances of its isotopes. The ______ mass unit (u) is defined as 1/12 of the mass of a Carbon-12 isotope, and it is used to express the mass of an atom. The ______ mass unit is also known as the Dalton (Da) and is used as a reference for comparing the masses of atoms and chemical compounds.

Atom, from ατομος, is the fundamental building block of matter, first described in the V-IV Century BCE by Leucippus and Democritus. John Dalton's Atomic Theory (1808) stated that all matter is made of indestructible and indivisible atoms, with atoms of the same element being identical and having equal mass. An ________ consists of a nucleus made of protons and neutrons, with electrons rotating around it.

The natural isotopic abundance and ________ of various elements, such as hydrogen, carbon, nitrogen, oxygen, silicon, sulfur, chlorine, and bromine. The atomic mass of an element is calculated as the sum of the natural isotopic abundances of its isotopes.

Over 98% of the Earth's crust consists of 13 elements, with oxygen and silicon being the most abundant. ________ and silicon being the most abundant.

The atomic mass unit (u) is defined as 1/12 of the mass of a Carbon-12 isotope, and it is used to express the mass of an ________.

The mass of an ________ is the sum of its protons and neutrons, with isotopes of the same element containing different numbers of neutrons.

The atomic mass unit is also known as the ________ (Da) and is used as a reference for comparing the masses of atoms and chemical compounds.

The atomic and nuclear radii of an ________ are approximately 10^-8 cm and 10^-13 cm, respectively.

The mass number is the sum of the number of neutrons and protons in an ________, while the atomic number is the number of protons in the nucleus.

The ________ and nuclear radii of an atom are approximately 10^-8 cm and 10^-13 cm, respectively.

Chemistry studies the ______ of matter and the reactions that can occur between different portions of matter

An element is a substance made of only one type of ______, which cannot be divided into simpler substances through chemical reactions

Elements are ordered by chemists according to their properties which are varying ______, ______, ______

The three aggregation states of matter are solid (definite volume and shape), liquid (definite volume and indefinite shape), and gaseous (indefinite volume and shape)

John Dalton's Atomic Theory (1808) stated that all matter is made of indestructible and indivisible atoms, with atoms of the same element being identical and having equal ______.

The mass of an atom is the sum of its protons and neutrons, with isotopes of the same element containing different numbers of ______.

The mass number is the sum of the number of neutrons and protons in an atom, while the atomic number is the number of ______ in the nucleus.

Isotopic abundance refers to the ratio of a specific isotope to the total number of atoms of an element, and it is essential for calculating the atomic ______ of an element.

The natural isotopic abundance and atomic mass of various elements, such as hydrogen, carbon, nitrogen, oxygen, silicon, sulfur, chlorine, and ______.

The atomic mass of an element is calculated as the sum of the natural isotopic abundances of its ______.

The atomic mass unit (u) is defined as 1/12 of the mass of a ______-12 isotope, and it is used to express the mass of an atom.

The atomic mass unit is also known as the ______ (Da) and is used as a reference for comparing the masses of atoms and chemical compounds.

An atom consists of a nucleus made of protons and neutrons, with electrons rotating around ______.

Over 98% of the Earth's crust consists of 13 elements, with oxygen and ______ being the most abundant.

Atom, from ατομος, is the fundamental building block of matter, first described in the V-IV Century BCE by Leucippus and ______.

The atomic and nuclear radii of an atom are approximately $10^{-8}$ cm and $10^{-13}$ cm, ______.