1. Composition of an Atom Quiz

What is the size of an atom?

• 1 × 10^-10 m

• 1 × 10^-5 m

• 1 × 10^-20 m

• 1 × 10^-15 m

What are the two types of particles in the nucleus of an atom?

• Neutrons and positrons

• Protons and neutrons

• Neutrons and electrons

• Protons and electrons

How is the charge of an electron expressed?

• As a relative charge

• As a specific small number

• As a negative charge

• As a positive charge

What is the proton number also known as?

• Element number

• Atomic mass

• Atomic number

• Nucleon number

Do all elements have the same proton number?

• Yes

• No

• Depends on the element

• Not enough information

What is the symbol used to represent the nucleon number of an element?

• Z

• M

• A

• N

How can the number of neutrons in an atom be found?

• Number of neutrons = nucleon number A + proton number Z

• Number of neutrons = nucleon number A / proton number Z

• Number of neutrons = nucleon number A - proton number Z

• Number of neutrons = nucleon number A * proton number Z

What does the nuclide notation represent?

• The size of the atom

• The composition of the atom

• The mass of the nucleus

• The charge of the nucleus

What are isotopes?

• Atoms with different numbers of protons

• Atoms with different numbers of electrons

• Atoms with the same number of protons and neutrons

• Atoms with the same number of protons but different numbers of neutrons

Do isotopes of the same element have identical chemical properties?

• Yes

• No

• Depends on the element

• Not enough information