Atomic Structure Quiz

Radioactive isotopes can be used to determine the age of organic material. What radioactive isotope is commonly used to date once living specimen?

• Carbon-14

• Phosphorus-32

• Protium

• Sodium-24

How can an atom of beryllium become an ion?

• gain or lose protons

• gain or lose electrons

• gain or lose neutrons

• none of these, beryllium is already stable

What is the smallest particle of an element that shows all the properties of that element?

• Subatomic Particles

• Atom

• Quarks

• Gluons

The nucleus of an atom is

• negatively charged and has a low density.

• negative charged and has a high density.

• positively charged and has a low density.

• positively charged and has a high density.

What subatomic particle is electrically neutral (no charge)?

• Proton
• Ion
• Neutron
• Electron

How many protons does this atom have?

• 2.5
• 6
• 5
• 10.811

An atom has an atomic number of 15 and a mass number of 31. How many protons are in the atom?

• 15

• 16

• 31

• 47

What are atoms of the same element with different numbers of neutrons called?

• Ions

• Gluons

• Isotope

• Quarks

Why do isotopes of the same element have similar chemical properties?

• Because they have the same number of neutrons

• Because they have the same mass number

• Because they have the same atomic number/number of electrons

Which of the following is unique to an atom?

• Number of neutrons

• Number of protons

• The mass number

• Number of isotopes