Ions Cations Anions

Explain why the electrolyte has to be a liquid.

• So the ions can move

• So the electrons can move

• So that it doesn't get too hot

• So the fish are ok

Positive ions (cations) will move towards the cathode (-) where they will discharge by....

• Breaking apart

• Losing electrons

• Clumping together.

• Gaining electrons

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What is the equation to show what happens to Cl ions at the anode.

• Cl^- --> Cl + e-   

• 2Cl^- --> Cl₂ + 2e-   

• Cl₂ + 2e-   2Cl^- 

• Cl₂ + 2e-  _-->  2Cl^- 

Tags

NGSS.HS-PS2-5

Choose the half-equation that shows the discharge of aluminium ion.

• Al³⁺ - 3e^- --> Al

• Al²⁺ + 3e^- --> Al

• Al³⁺ + 3e^- --> Al

• Al³⁺ --> Al + 3e^-

Tags

NGSS.HS-PS1-2

What is the half-equation for the discharge of hydroxide ions?

• 2O^2- --> O₂ + 4e^-

• OH^- --> OH + e

• 4OH^- --> 2H₂O + O₂ + 4e^-

• 2H₂O + O₂ + 4e^- --> 4OH^-

What is the name of a negatively charged electrode?

• cathode

• anode

• cation

• anion

Tags

NGSS.HS-PS2-5

An ionic bond is the attraction between: (Select ALL that apply)

• oppositely charged ions

• similarly charged ions

• metals and nonmetals

• neutral atoms

• cations and anions

Tags

NGSS.HS-PS1-3

If I had a cation with a charge of ²⁺ how would you describe the formation of that ion?

• gained 2 electrons

• lost 2 electrons

• gained 4 electrons

• lost 4 electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Looking at the periodic table, when the alkali metals form an ion what charge do they have?

• 1-

• 1+

• 2-

• 2+

• 3-

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Looking at the periodic table, when the alkaline earth metals form an ion what charge do they have?

• 1-

• 1+

• 2-

• 2+

• 3-

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2