Ions and Atoms

Ions are: 

• atoms with a positive or negative charge
• atoms with no charge
• atoms with ONLY a positive charge
• atoms with ONLY a negative charge

Tags

NGSS.HS-PS2-4

When an atom loses a valence electron, it becomes a(n) _____________ ion.

• positive
• negative
• neutral
• polyatomic

When an atom gains a valence electron, it becomes a(n) _____________ ion.

• positive
• negative
• neutral
• polyatomic

A proton has what charge?

• positive
• negative
• no charge
• it depends

An electron has what kind of charge?

• no charge
• positive 
• negative
• it depends

Two or more atoms held together by a chemical bond is called what?

• A molecule
• A molecure

Tags

NGSS.MS-PS1-1

Atoms that gain & lose electrons are called _________

• ions
• isotopes
• radioactive
• corrosive

What is the charge of an atom that has lost one electron?

• -1
• -2
• +1
• +2

What is the charge of an atom that has gained one electron?

• -1
• -2
• +1
• +2

all matter is made of what 

• energy 
• atoms 
• neutrons 
• compounds 

Tags

NGSS.MS-PS1-1