Atomic theory part 3 quiz

What are the three primary components of an atom?

• Protons, Neutrons, Electrons

• Protons, Neutrons, Photons

• Neutrons, Electrons, Quarks

• Protons, Electrons, Isotopes

What is the nucleus of an atom?

• The outer part of the atom where electrons are found.

• The small, dense, positively charged center of the atom.

• The negatively charged particles surrounding the atom.

• A collection of neutrons outside the atom's core.

What is the charge of a proton?

• Negative

• Neutral

• Positive

• Variable

What determines the atomic number of an element?

• Number of neutrons

• Number of electrons

• Number of protons

• Number of isotopes

Which element is identified by having exactly one proton in its nucleus?

• Helium

• Oxygen

• Carbon

• Hydrogen

What is the primary function of neutrons in an atomic nucleus?

• To add mass to the atom

• To hold protons together and prevent them from repelling each other

• To participate in chemical reactions

• To carry a negative charge

What must be subtracted from the atomic mass of an element to find the number of neutrons?

• Number of electrons

• Atomic number

• Number of protons

• Number of isotopes

In an element, the number of electrons is always equal to the number of:

• Neutrons

• Isotopes

• Protons

• Atomic masses

What is the charge of electrons?

• Positive

• Neutral

• Negative

• Variable

Where are electrons located in an atom?

• In the nucleus

• Outside the nucleus

• Inside protons

• Within neutrons