Atoms Quiz

What is the smallest particle of an element that retains its chemical properties?

• compound

• cell

• atom

• molecule

What are the three subatomic particles that make up an atom?

• protons, neutrons, and positrons

• protons, neutrons, and electrons

• electrons, photons, and neutrinos

• protons, electrons, and quarks

Which subatomic particle has a positive charge?

• proton

• quark

• neutron

• electron

What is the atomic number of an element?

• The atomic number of an element is the number of neutrons in the nucleus of an atom.

• The atomic number of an element is the number of electrons in the nucleus of an atom.

• The atomic number of an element is the number of protons and neutrons in the nucleus of an atom.

• The atomic number of an element is the number of protons in the nucleus of an atom.

What are isotopes?

• Atoms of different elements that have the same number of protons.

• Atoms of different elements that have the same number of neutrons.

• Atoms of the same element that have different numbers of protons.

• Atoms of the same element that have different numbers of neutrons.

What is the atomic mass of an element?

• The atomic mass of an element is the mass of the most common isotope of that element.

• The atomic mass of an element is the number of protons in the nucleus of an atom of that element.

• The atomic mass of an element is the average mass of the atoms in a sample of that element.

• The atomic mass of an element is the total mass of all the atoms in a sample of that element.

How many electrons can the first energy level hold?

• 4

• 6

• 2

• 8

What is the symbol for the element with atomic number 6?

• H

• O

• N

• C

What is the electron configuration of oxygen?

• 1s2 2s2 2p2

• 1s2 2s2 2p4

• 1s2 2s2 2p3

• 1s2 2s2 2p6

Which group of elements in the periodic table is known as the noble gases?

• Group 8

• Group 18

• Group 1

• Group 12