Oyster Test 1

Front

What is the pH scale?

Back

The pH scale measures how acidic or basic a substance is, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.

Front

What is a strong base?

Back

A strong base is a substance that completely dissociates in water to produce hydroxide ions (OH-), resulting in a high pH value.

Front

What is the highest historical CO2 level recorded before 1950?

Back

300 ppm (parts per million) is the highest historical CO2 level recorded before 1950.

Front

What happens to pCO2 levels over time?

Back

pCO2 levels can increase or decrease based on various environmental factors, such as human activities and natural processes.

Front

What does a higher pH value indicate?

Back

A higher pH value indicates a more basic (alkaline) substance.

Front

What is the chemical reaction of CO2 and H2O?

Back

CO2 + H2O → H2CO3 (carbonic acid) is the reaction that occurs when carbon dioxide dissolves in water.

Front

What is carbonic acid?

Back

Carbonic acid (H2CO3) is a weak acid formed when carbon dioxide dissolves in water.

Front

What is the significance of measuring pH in household substances?

Back

Measuring pH helps determine whether a substance is acidic or basic, which is important for various applications, including cleaning and cooking.

Front

What is the relationship between pH and acidity?

Back

Lower pH values (below 7) indicate higher acidity, while higher pH values (above 7) indicate higher basicity.

Front

What is the effect of increased CO2 levels on the environment?

Back

Increased CO2 levels contribute to climate change and global warming by enhancing the greenhouse effect.