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

• two
• three
• 92
• billions

The word "atom" is from the _____

• Latin for "three parts"
• Greek for "indivisible"
• Gaelic for "uncuttable"
• French for "tiny"

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

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

Tags

NGSS.HS-PS1-1

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

Tags

NGSS.HS-PS1-8

Which term represents just the total number of nucleons in the nucleus of an atom?

• atomic weight

• relative atomic mass

• atomic number

• mass number

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

• isotropics
• isotherms
• isomers
• isotopes