2.1 Structure of atoms

• Neutrons = Mass Number + Atomic Number
• Neutrons = Mass Number - Atomic Number
• Neutrons = Atomic Number + Electrons
• Neutrons = Atomic Number - Electrons

Tags

NGSS.MS-PS1-1

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

• negatrons 
• electrons 
• neutrons 
• protons 

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

• nucleus 
• electron cloud
• core 
• center 

Tags

NGSS.MS-PS1-1

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

electrons have this type of charge?

• negative
• positive
• neutral

Tags

NGSS.MS-PS2-3

all matter is made of what 

• energy 
• atoms 
• electrons 
• compounds 

Tags

NGSS.MS-PS1-1

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

• Proton
• Neutron
• Electron
• Quark

Tags

NGSS.MS-PS1-1

What does the nucleus consist of?

• Protons + Electrons
• Neutrons + Electrons
• Atoms
• Protons + Neutrons

What are the 3 particles that make-up the atom?

• protons, neutrons, and isotopes
• neutrons, isotopes, and electrons
• positives, negatives, and electrons
• protons, neutrons, and electrons

Tags

NGSS.MS-PS1-1

What are valence electrons?

• electrons on the first orbital always

• nucleus

• the outermost shell

• the number of electrons present in the outermost orbital

Tags

NGSS.MS-PS1-1