C.4 Lessons 1-3 Flashcard

Front

What is the pH of a neutral substance?

Back

Exactly 7

Front

How does a tenfold change in H+ ion concentration affect pH?

Back

Changes the pH value by 1

Front

What is a carbon sink?

Back

A process that absorbs and stores more atmospheric carbon than it releases

Front

In a more acidic ocean, do the shells of baby oysters and other baby shellfish grow easily?

Back

No, they do not grow as easily and often die.

Front

What trend was observed in ocean pH from 1990 to 2000?

Back

The pH of the ocean decreased.

Front

What does a pH value below 7 indicate?

Back

The substance is acidic.

Front

What does a pH value above 7 indicate?

Back

The substance is basic (alkaline).

Front

What is the relationship between H+ ion concentration and pH?

Back

As H+ ion concentration increases, pH decreases.

Front

What is ocean acidification?

Back

The decrease in pH of ocean waters due to increased CO2 absorption.

Front

Why are carbon sinks important for the environment?

Back

They help mitigate climate change by absorbing CO2 from the atmosphere.