Atomic Structure & Forces

What are the fundamental building blocks of all matter?

• Atoms

• Compounds

• Molecules

• Cells

Which subatomic particle carries a positive electric charge?

• Neutron

• Electron

• Proton

• Photon

What is the charge of a neutron?

• Positive

• Negative

• Neutral

• Variable

What is the central part of an atom called?

• Proton

• Nucleus

• Electron cloud

• Neutron

Which force binds electrons to the nucleus?

• Strong Nuclear Force

• Electromagnetic Force

• Gravitational Force

• Weak Nuclear Force

What defines the element of an atom?

• Number of neutrons

• Number of electrons

• Number of protons

• Mass number

What is the mass number of an atom?

• Number of neutrons

• Total number of electrons

• Number of protons

• Total number of protons and neutrons

What are isotopes?

• Atoms with the same number of electrons but different number of protons

• Atoms with the same number of neutrons but different number of protons

• Atoms with the same number of protons and neutrons

• Atoms with the same number of protons but different number of neutrons

What is the charge of an electron?

• Positive

• Variable

• Negative

• Neutral

What is the role of the strong nuclear force?

• Binds electrons to the nucleus

• Holds the nucleus together

• Attracts neutrons

• Repels protons