Basic Concepts of Matter

What is the smallest unit of an element that retains the properties of that element?

• Molecule

• Atom

• Compound

• Particle

What is a small portion of matter, including subatomic components such as protons, neutrons, and electrons?

• Electron

• Proton

• Neutron

• Particle

What is a positively charged subatomic particle found in the nucleus of an atom?

• Electron

• Neutron

• Proton

• Atom

What is a negatively charged subatomic particle that orbits the nucleus of an atom?

• Proton

• Neutron

• Electron

• Molecule

What is a subatomic particle with no electric charge, found in the nucleus of an atom?

• Electron

• Neutron

• Proton

• Atom

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

• Atomic number

• Electron arrangement

• Mass number

• Valence shell

What is the number of protons in the nucleus of an atom, which defines the element?

• Electron arrangement

• Atomic number

• Mass number

• Valence shell

What refers to the distribution of electrons in an atom's electron shells or orbitals?

• Valence shell

• Atomic number

• Electron arrangement

• Mass number

What is the outermost electron shell of an atom that contains the valence electrons?

• Atomic number

• Electron arrangement

• Valence shell

• Mass number

What is any substance that is made up of particles that occupy space and have mass?

• Matter

• Compound

• Molecule

• Element