Test

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

• nucleus

• electron cloud

• core

• center

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

All matter is made of

• energy

• atoms

• electrons

• compounds

Particles in an atom that are neutral and have no charge are ...

• negatrons

• electrons

• neutrons

• protons

An atom with an Atomic Number 6 would have how many protons?

• 6

• 12

• 3

• cannot be determined

What does the 1.00794 stand for?

• Hydrogen
• atomic number
• atomic mass
• atomic explosion

Tags

NGSS.MS-PS1-1

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

• Proton
• Neutron
• Electron
• Quark

The particles that are found in the nucleus of an atom are

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

Tags

NGSS.MS-PS1-1

What quantities vary between isotopes of an element?

• protons, electrons, and atomic mass
• protons, electrons, and atomic number
• neutrons and electrons
• neutrons and mass number

Atoms of the same element must always have the same number of _________

• electrons
• neutrons
• isotopes
• protons