Standard Model of Particle Physics

What is the smallest unit of any chemical compound?

• Molecule

• Atom

• Electron

• Nucleus

What is the smallest unit of any element in the periodic table?

• Molecule

• Atom

• Electron

• Nucleus

Which particle is considered as one of the fundamental, indivisible building blocks of the universe?

• Molecule

• Atom

• Electron

• Nucleus

What force binds electrons to an atom's nucleus?

• Electromagnetism

• Gravity

• Weak Force

• Strong Force

What particles carry the electromagnetic force?

• Photons

• Gluons

• W and Z

• Muons

What particles carry the strong force?

• Photons

• Gluons

• W and Z

• Muons

How many quarks are there in total?

• 2

• 3

• 6

• 9

Which force allows protons and neutrons to transform into each other?

• Electromagnetism

• Gravity

• Weak Force

• Strong Force

Three students each make a statement about antiparticles.

I An antiparticle has the same mass as its equivalent particle.

II An antiparticle has the same charge as its equivalent particle.

III Every elementary particle has a corresponding antiparticle.

Which of the statements is/are correct?

• I

• II

• I, III

• II, III

• I, II, III

An electron and another particle of identical mass pass through a uniform magnetic field. Their paths are shown in the diagram. This observation provides evidence for the existence of

• neutrino

• antimatter

• quarks

• protons

• force mediating particles