Subatomic Particles

Particles in an atom's nucleus that are neutral and have no charge are 

• megatrons. 
• electrons.
• neutrons.
• protons. 

Tags

NGSS.MS-PS1-1

What is the atomic number for an element with three protons?

• 2
• 1
• 3
• 6

A negatively charged particle that moves around the nucleus is a(n)

• proton
• neutron
• electron
• quark

Tags

NGSS.MS-PS1-1

Most of an atom's mass is found in the

• electrons.
• nucleus.

A neutral atom of the element sodium has 11 protons and ____ electrons.

• 22
• 23
• 8
• 11

Tags

NGSS.MS-PS1-1

How many electrons does a (neutral) Copper atom have?

• 63
• 29
• 92
• 34

Tags

NGSS.MS-PS1-1

How many electrons does a (neutral)  atom of Krypton have?

• 36
• 83.80
• 47.80
• 119.80

Tags

NGSS.MS-PS1-1

Found in the nucleus of the atom

• electrons only
• protons only
• neutrons and protons
• neutrons and electrons

Tags

NGSS.HS-PS1-8

Atomic mass - Atomic Number =

• protons
• neutrons
• electrons
• Average Mass

An element is defined by its number of 

• protons
• electrons
• neutrons
• protons + electrons