Radioactive Decay Review

What do we call the tiny core at the center of an atom, containing most of the atom’s mass and all of its positive charge?

• Neutron

• Electron

• Proton

• Nucleus

The "building blocks" of matter are:

• atoms and molecules

• electrons

• found only in the plasma state

• as of yet undiscovered

Tags

NGSS.MS-PS1-1

Atoms with the same atomic number but different atomic mass are called:

• subtypes

• ions

• prototypes

• isotopes

What is the fundamental property of matter that can either be positive or negative?

• gravity

• mass

• charge

• magnetism

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Protons and neutrons in the nucleus are held together by:

• gravity

• the weak force

• electromagnetic force

• the strong nuclear force

Compared to protons, electrons have:

• much smaller mass and opposite charge

• much larger mass and opposite charge

• about the same mass and opposite charge

• much larger mass and the same charge

The (a)   is one kind of particle that makes up the atom and carries a positive charge.

• neutron

• plasma

• electron

• proton

Atomic number is:

• the number of neutrons and protons in an atom

• the number of electrons and protons in an atom.

• the number of electrons in an atom

• the number of protons in an atom

Electrons are bound to the nucleus by:

• electromagnetic force

• the weak force

• gravity

• the strong nuclear force

Tags

NGSS.HS-PS2-4

A particle with zero charge found in the nucleus of an atom is called a(n):

• proton

• electron

• positron

• neutron