Atom Structure

What is the term for particles that have the same number of protons but different numbers of neutrons?

• Isotopes

• Ions

• Atoms

• Molecules

What is the charge of a neutron?

• Positive

• Negative

• Neutral (no charge)

• Depends on the environment

What do we call the number of protons in an atom?

• Atomic Mass

• Atomic Number

• Molecular Weight

• Isotope Number

What is the term for the average mass of an atom's isotopes?

• Atomic Weight

• Molecular Mass

• Atomic Mass

• Isotopic Mass

Which particle has a positive charge?

• Electron

• Neutron

• Proton

• Photon

The negatively charged particles of an atom are the ______.

• Protons

• Neutrons

• Electrons

• Positrons

What is the mass of a proton compared to an electron?

• Proton is much heavier than an electron.

• Proton and electron have the same mass.

• Proton is lighter than an electron.

• Proton has no mass compared to an electron.

What is the smallest unit of an element?

• Molecule

• Atom

• Compound

• Ion

What goes in place of the question marks? Atomic Mass, Atomic Number, Electrons

• Atomic Mass

• Atomic Weight

• Atomic Radius

• Atomic Charge

Which particles make up the nucleus of an atom?

• Electrons and Neutrons

• Protons and Neutrons

• Protons and Electrons

• Neutrons and Photons