Ions Cations Anions

An ion is

• Also a compound

• An atom that has gained or lost an electron

• An atom that has only gained electrons

• An atom where the number of protons=electrons

Anions

• Gain electrons, has an overall positive charge

• Lose electrons, has an overall positive charge

• Lose electrons, has an overall negative charge

• Gain electrons, has an overall negative charge

Cations

• Gain electrons, has an overall positive charge

• Lose electrons, has an overall positive charge

• Lose electrons, has an overall negative charge

• Gain electrons, has an overall negative charge

Which of the following is an anion?

• Lithium

• Magnesium

• Iodide

• Silver

What do we call an atom that has become charged by gaining or losing electrons?

• Ion

• Isotope

• Electron

• Valence Electron

Tags

NGSS.MS-PS1-1

A positive ion is called a...

• Posion

• Anion

• Cation

• Proton

What is a positive ion called?

(a)  

• anion

• cation

• isotope

• covalent

A Beryllium atom that has lost 2 electrons would look like

• Be²⁺

• B^2-

• B²⁺

• Be^2-

Tags

NGSS.MS-PS1-1

The cation Rb⁺ has

• Had nothing happen to it

• Gained 1 electron

• Lost 1 electron

• Become negative

Tags

NGSS.MS-PS1-5

Describe the anion S^2-

• Silicon that gained 2 electrons

• Sulfide that gained 2 electrons

• Sulfur that gained 2 electrons

• Strontium that gained 2 electrons