The Nucleus

In chemistry, how many types of subatomic particles are considered to form everything?

• two
• three
• 92
• billions

The proton is _____

• heavy and neutral
• heavy and negatively charged
• heavy and positively charged
• light and negatively charged

The neutron is _____

• heavy and neutral
• heavy and negatively charged
• heavy and positively charged
• light and neutral

The electron is _____

• heavy and positively charged
• light and positively charged
• light and neutral
• light and negatively charged

Protons and neutrons hang out in the nucleus, and are referred to as _____

• kernals
• bosons
• nucleotides
• nucleons

Which particle hangs out around the nucleus and is involved in chemical reactions?

• the electron
• the proton
• the neutron
• the photon

Which subatomic particles determine the identity of an element?

• electrons

• protons

• neutrons

• photons

The number of protons in an element is its _____

• atomic weight
• relative atomic mass
• atomic number
• mass number

Nuclei are held together by the strongest of the four fundamental forces of physics, _____

• the electromagnetic force
• the gravitational force
• the strong nuclear force
• the weak nuclear force

Variants of an element, with different masses but the same chemical properties, are called _____

• isotropics
• isotherms
• isomers
• isotopes