Atom Quiz

What is an atom?

• An atom is a unit of time.

• An atom is a type of fruit.

• An atom is a type of animal.

• An atom is the basic unit of matter.

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

• protons, neutrons, and electrons

• protons, neutrons, and quarks

• protons, electrons, and photons

• protons, neutrons, and positrons

What is the charge of a proton?

• 0

• +2

• -1

• +1

What is the charge of an electron?

• -1.6 x 10^-19 coulombs

• 1.6 x 10^19 coulombs

• 0 coulombs

• 1.6 x 10^-19 coulombs

What is the charge of a neutron?

• 2

• 0

• 1

• -1

What is the atomic number of an atom?

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

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

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

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

What is the atomic mass of an atom?

• The atomic mass of an atom is the sum of the masses of all the isotopes of that element.

• The atomic mass of an atom is the average mass of all the isotopes of that element, taking into account their relative abundance.

• The atomic mass of an atom is the average mass of all the electrons in that element.

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

What is an isotope?

• A variant of an element with the same number of electrons but a different number of protons.

• A variant of an element with the same number of neutrons but a different number of protons.

• A variant of an element with the same number of protons but a different number of neutrons.

• A variant of an element with the same number of protons but a different number of electrons.

What is the Bohr model of an atom?

• A model that suggests that electrons move in random paths around the nucleus of an atom.

• A theory that states that electrons are located in fixed positions within an atom.

• A simplified representation of an atom where electrons orbit the nucleus in specific energy levels or shells.

• A model that describes the movement of protons and neutrons within an atom.

What is the valence shell of an atom?

• outermost shell

• core shell

• middle shell

• innermost shell