Quiz 2 lesson 1 prep 1 on Atomic Structure

What is the building unit of matter?

• Molecule

• Atom

• Cell

• Nucleus

Which particle is positively charged?

• Proton

• Molecule

• Neutron

• Electron

What is the charge of a neutron?

• Positive

• Negative

• Neutral

• Variable

What is the mass of electrons compared to protons?

• Negligible

• More than

• Greater

• Equal

Which element is necessary for healthy plant growth?

• Hydrogen

• Oxygen

• Nitrogen

• Calcium

What does the atomic number represent?

• Mass number

• Number of molecules

• Number of protons

• Number of neutrons

What is the nucleus of an atom?

• The center containing protons and neutrons

• The area where electrons orbit

• The smallest particle

• The outer layer

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

• Thomson model

• Rutherford model

• Dalton model

• Bohr model

What is the chemical symbol for potassium?

• N

• K

• P

• Na

What is the mass number of an atom?

• Number of protons only

• Number of neutrons only

• Sum of protons and neutrons

• Sum of electrons and neutrons