Chem 10 Note Card quiz

How does CO₂ enter the ocean?

• waves

• magic

• plants

What is CaCO₃

• calcium ion

• calcium carbonate

shellfish need this to make shells

• calcium carbonate

• CaCO₃

• bicarbonate

What is Ca⁺²

• carbon

• calcium ion

When CO₂ combines with H₂O it makes?

• carbonic ion

• carbonic acid

• H₂CO₃

Dissociate

• come together

• break apart into ions

When calcium carbonate H₂CO₃ starts to break apart (dissociate), turns into

• H+

• HCO₃

• hydrogen ions

• bicarbonate

• calcium

• carbonate ion

Bicarbonate makes shells

• yes

• no

H+

• hydrogen ion

• Is released with carbonic acid (H₂CO₃)breaks apart

• Is released when bicarbonate breaks apart (HCO₃)

• makes the ocean more acidic