Atomic Structure

What subatomic particles would you find in the nucleus of an atom?

• Protons only

• Protons and Neutrons

• Neutrons and Electrons

• Protons and Electrons 

Tags

NGSS.MS-PS1-1

What subatomic particle is electrically neutral (no charge)?

• Proton

• Ion

• Neutron

• Electron

Tags

NGSS.MS-PS1-1

Which subatomic particles contribute the most to the mass of an atom?

• Protons, Neutrons, Electrons

• Protons only

• Protons and Electrons

• Protons and Neutrons

Tags

NGSS.MS-PS1-1

What subatomic particle(s) would be found orbiting the nucleus?

• Neutrons only

• Electrons only

• Protons and Neutrons

• Protons and Electrons

Tags

NGSS.MS-PS1-1

Silicon has a mass number of 28 and an atomic number of 14. How many protons does it have?

• 28

• 14

• 42

• 7

Tags

NGSS.MS-PS1-1

The positive particles of an atom are 

• electrons 

• positrons 

• neutrons 

• protons 

Tags

NGSS.MS-PS1-1

the central region of an atom where its neutrons and protons are is its 

• nucleus 

• electron cloud

• core 

• center 

Where is most of the MASS of an atom located?

• In the nucleus

• Electron cloud

• In the electron

• Evenly spread throughout the atom

The electron has a ___.

• negative charge

• neutral charge

• positive charge

• static charge

Tags

NGSS.MS-PS2-3

Which statement correctly describes the relative masses of subatomic particles?

• Protons and neutrons have almost equal masses, and electrons have a much smaller mass.

• Neutrons and electrons have almost equal masses, and protons have a much larger mass.

• Protons, neutrons, and electrons all have roughly the same masses.

• Electrons and protons have the same masses, and neutrons have no mass.