PhySciQ1 AY 23-24

Which subatomic particle is assigned a neutral charge, responsible for holding together the protons in the nucleus, and is a mass-forming unit in an atom?

• electron

• proton

• neutron

• neutrino

Which subatomic particle is assigned a positive charge, a mass forming unit, and determines the identity of an atom?

• electron

• proton

• neutron

• neutrino

Which subatomic particle is assigned a negative charge, orbits the nucleus in defined energy shells, and determines an atom’s ability to form bonds with other atoms?

• electron

• proton

• neutron

• neutrino

What do we call the one uppercase letter, or a combination of an uppercase letter and a lowercase letter used to identify an element in the periodic table?

• period

• family

• group

• symbol

What do we call the elements that have the same number of valence electrons?

• family

• isotope

• symbol

• period

Which of the following is the current accepted model of an atom?

• Nuclear Model

• Plum Pudding Model

• Planetary Model

• Quantum Model

What is a cloud of dust and gas that is suspended in space and is commonly identified as the birthplace of stars?

• nebula

• galaxy

• constellation

• supernova

During stellar evolution, what is formed when a giant star dies, and the forces of gravity overcomes the mass of the star?

• neutron star

• white dwarf

• supernova

• black hole

During stellar evolution, what happens when a high mass star could no longer fuse iron atoms on its core and could no longer sustain the force of gravity that hold the star together?

• neutron star

• white dwarf

• supernova

• black hole

Which stage in the stellar evolution is responsible for forming most of the atoms that has a lower atomic mass that iron?

• main sequence

• red giant

• supernova

• neutron star