Atoms Quiz

The difference between the Carbon-12 and Carbon-14 isotopes is the

• atomic numbers

• number of protons

• number of neutrons

• number of electrons

How many electrons are in an electrically neutral atom of boron?

• 3

• 5

• 6

• 8

Identify the subatomic particle that is NOT contained in the nucleus.

• electron

• neutron

• nucleus

• proton

What is the name of the atom shown?

• beryllium

• boron

• fluorine

• helium

An atom either gains or loses _______ to become an ion.

• electrons

• neutrons

• positrons

• protons

Describe the structure of an atom.

• The nucleus is the dense center of the atom composed of protons and neutrons. Surrounding the nucleus is an electron cloud composed of electrons.

• The nucleus is the dense center of the atom composed of electrons and neutrons. Surrounding the nucleus is an electron cloud composed of protons.

• The electron cloud is the dense center of the atom composed of electrons. Surrounding the electron cloud is a nucleus composed of protons and neutrons.

• The electron cloud is the dense center of the atom composed of protons and neutrons. Surrounding the electron cloud is a nucleus composed of electrons.

Twenty is the _________________ of potassium.

• charge

• atomic mass

• atomic number

• number of neutrons

Which subatomic particle has a positive charge?

• electron

• proton

• neutron

• nucleus

What can be concluded about the atom from knowing that oxygen-18 has an atomic number of 8?

• An oxygen atom that includes 8 baryons, 9 prions, and 10 neutrons.

• This oxygen isotope contains 8 electrons, 8 protons, and 10 neutrons.

• It's an oxygen allotrope incorporates 7 electrons, 7 protons, and 7 quarks.

• The oxygen configuration consists of 6 electrons, 8 photons, and 10 neutrons.

The nucleus of an atom contains which subatomic particles?

• neutrons only

• protons and neutrons

• neutrons and electrons

• protons and electrons