Atomic Structure and Properties

What are the three main parts that make up an atom?

• Electrons, protons, and neutrons

• Electrons, protons, and photons

• Protons, neutrons, and quarks

• Neutrons, electrons, and positrons

What role do neutrons play in the nucleus of an atom?

• They help hold the nucleus together

• They give the atom its charge

• They determine the element of the atom

• They orbit around the nucleus

How do electrons differ from protons and neutrons in terms of mass?

• Electrons are much lighter

• Electrons are much heavier

• Electrons have the same mass

• Electrons have no mass

What is the atomic number of an element based on?

• The number of protons

• The number of neutrons

• The number of electrons

• The total number of particles

What happens when electrons jump between energy levels?

• They produce light

• They lose mass

• They become protons

• They stop moving

Why are metals good conductors of electricity?

• Their electrons can move freely

• They have more protons

• They have a dense nucleus

• They have more neutrons

Which particle has a positive charge, and where is it located in the atom?

• Neutron, located in the electron cloud.
• Electron, located in the nucleus of the atom.
• Proton, located in the nucleus of the atom.
• Alpha particle, located in the nucleus of the atom.

What makes neutrons different from protons and electrons in terms of electrical charge?

• Neutrons have a positive charge.
• Neutrons have a negative charge.
• Neutrons have no electrical charge.
• Neutrons have a variable charge.

Why would any atom with 6 protons always be carbon, no matter what else happens to the atom?

• Carbon can have more or less than 6 protons.
• Atoms with 6 protons can change to nitrogen.
• Any atom with 6 protons is always carbon.
• Any atom with 6 protons can be oxygen.

What important job do neutrons perform in the nucleus?

• Neutrons generate energy for the nucleus.
• Neutrons stabilize the nucleus by counteracting proton repulsion.
• Neutrons attract electrons to the nucleus.
• Neutrons are responsible for nuclear fusion.