Atomic Particles Review

In a neutral atom, which two subatomic particles are equal in number?

• protons and neutrons

• all subatomic particles are equal in number

• neutrons and electrons

• protons and electrons

Tags

NGSS.MS-PS1-1

The atomic number is equal to _.

• the number of protons and electrons
• the number of neutrons only
• the total number of protons and neutrons
• the number of protons neutrons and electrons

The atomic mass is equal to _.

• the number of protons only
• the number of neutrons only
• the total number of protons and neutrons
• the number of protons, neutrons, and electrons.

An element's identity is determined by the number of

• electrons.
• protons.
• neutrons.
• valence.

What is the atomic mass of Neon?

• 10
• 20.18
• 10.18
• 30.18

What element has an atomic number of 17?

• Cl

• F

• S

• Ar

How many protons does Mg have?

• 10

• 11

• 12

• 13

Who discovered electrons?

• Thomson

• Rutherford

• Bohr

• Dalton

Whose series of experiments identified the nucleus of the atom?

• Bohr

• Dalton

• Rutherford

• Thomson

What do you call this atomic model?

• Solid Sphere Model

• Nuclear Model of an Atom

• Plum Pudding Model

• Planetary Model

Tags

NGSS.MS-PS1-1