Formative Assessment: Atomic Structure and Matter Classification

Which subatomic particle determines an element’s identity?

• Electron

• Proton

• Nucleus

• Nuetron

Who proposed that electrons move in fixed orbits around the nucleus?

• Dalton

• Thomson

• Bohr

• Schrödinger

What is a compound?

• Two or more substances physically combined

• Two or more elements chemically combined in fixed proportions

• A pure substance with only one kind of atom

• A mixture of elements and compounds

Which force holds protons and neutrons together in the nucleus?

• Weak nuclear force

• Strong nuclear force

• Gravitational force

• • Electromagnetic force

Which model introduced the concept of electron clouds?

• Bohr's Planetary Model

• Dalton's Modern Atomic Theory

• Schrödinger’s Quatum Mechanical Model

• Rutherford's Plum Pudding

Who discovered the neutron?

• Thomson

• Chadwick

• Rutherford

• Bohr

TRUE or FALSE
Electrons are located inside the nucleus.

• FALSE

• TRUE

TRUE or FALSE
The neutron has no electric charge.

• FALSE

• TRUE

TRUE or FALSE
Electrons are responsible for the bonding of an atom to a different atom

• FALSE

• TRUE

TRUE or FALSE
Protons are heavier than electrons.

• FALSE

• TRUE