Exploring Atoms and Their Properties

What are the three main components of an atom?

• Electrons, Neutrons, Quarks

• Protons, Photons, Neutrons

• Protons, Neutrons, Positrons

• Protons, Neutrons, Electrons

Describe the structure of an atom.

• An atom is structured with a central nucleus made of protons and neutrons, surrounded by orbiting electrons.

• Atoms are made up of only electrons and no nucleus.

• An atom consists of a solid core surrounded by a cloud of gas.

• An atom is a single particle that cannot be divided.

What is the atomic number of an element?

• The atomic number is the total number of electrons in an atom.

• The atomic number of an element is the number of protons in its nucleus.

• The atomic number represents the mass of an element in atomic mass units.

• The atomic number is the number of neutrons in the nucleus.

How is the atomic mass of an element calculated?

• The atomic mass is the sum of protons and neutrons only.

• The atomic mass is determined by the most abundant isotope only.

• The atomic mass is the weighted average of the masses of an element's isotopes.

• The atomic mass is a fixed value for all elements.

What is the difference between an isotope and a regular atom?

• An isotope has a different chemical behavior than a regular atom.

• An isotope has a different number of protons than a regular atom.

• Isotopes are always radioactive, while regular atoms are stable.

• An isotope differs from a regular atom in that it has a different number of neutrons, leading to a different atomic mass.

How do ions differ from neutral atoms?

• Ions have a net charge due to an imbalance of protons and electrons, while neutral atoms have equal numbers of both.

• Neutral atoms can have a net charge if they lose electrons.

• Ions have more neutrons than neutral atoms.

• Ions are always larger than neutral atoms.

What is the charge of a proton?

• -1 elementary charge

• 0 elementary charge

• +2 elementary charge

• +1 elementary charge

What is the charge of a neutron?

• +2

• +1

• -1

• 0

What is the charge of an electron?

• -2 elementary charges

• +1 elementary charge

• -1 elementary charge

• 0 elementary charge

How many protons are in a carbon atom?

• 8

• 6

• 7

• 5