Atomic Structure Challenge

What is the smallest particle of an element that can take part in a chemical reaction?

• molecule

• proton

• compound

• atom

Fill in the blank: The nucleus of an atom is made up of ______ and ______.

• electrons and protons

• protons and electrons

• protons and neutrons

• neutrons and electrons

Which subatomic particle has a positive charge?

• Proton

• Neutron

• Photon

• Electron

True or False: Isotopes of an element have the same number of protons but different numbers of neutrons.

• Maybe

• Sometimes

• False

• True

What is the charge of an electron?

• +1.6 x 10^-19 C

• -1.6 x 10^19 C

• 0 C

• -1.6 x 10^-19 C

What is the total number of protons and neutrons in the nucleus of an atom called?

• Nuclear charge

• Element number

• Atomic number

• Mass number

What is the atomic number of an element?

• Number of protons

• Number of electrons

• Number of neutrons

• Number of isotopes

Fill in the blank: The number of protons in an atom is equal to the ______ number.

• elemental

• electron

• neutron

• atomic

Which type of radiation has the highest penetrating power?

• X-ray radiation

• Alpha radiation

• Gamma radiation

• Beta radiation

What is the process by which an unstable atomic nucleus loses energy by emitting radiation called?

• Nuclear fusion

• Energy dissipation

• Radioactive decay

• Atomic disintegration