Quiz on Atomic Structure and Matter

What is the building unit of matter?

• Cell

• Nucleus

• Atom

• Molecule

Which particle in the nucleus has a positive charge?

• Nucleus

• Proton

• Electron

• Neutron

What is the mass number of an atom?

• Sum of protons and electrons

• Sum of protons and neutrons

• Number of neutrons

• Number of protons

Which element is necessary for the greening of plant leaves?

• Phosphorus

• Calcium

• Potassium

• Nitrogen

What is the chemical symbol for potassium?

• Na

• P

• K

• Ca

Which model is considered the first experimental model of the atom?

• Dalton

• Thomson

• Bohr

• Rutherford

What happens when the atomic number equals the mass number?

• The atom is neutral

• The atom is positively charged

• There are more neutrons than protons

• There are no electrons

What is the charge of neutrons?

• Variable

• Neutral

• Negative

• Positive

What is the charge of an electron?

• Positive

• Neutral

• Negative

• Variable

Which particle is found in the nucleus of an atom?

• Electron

• Proton

• Photon

• Quark