Unit 15/16 Review R

Front

What are fossil fuels?

Back

Fossil fuels are natural substances formed from the remains of ancient plants and animals, primarily consisting of hydrocarbons. Examples include gasoline, diesel, natural gas, and coal.

Front

What happens to the carbonate buffer equilibrium during CPR?

Back

The equilibrium shifts to the right as CO2 levels increase due to the person receiving rescue breaths.

Front

Define a buffer system in chemistry.

Back

A buffer system is a solution that resists changes in pH when an acid or base is added, maintaining a relatively stable pH.

Front

What is coral bleaching?

Back

Coral bleaching is the loss of symbiotic algae from coral, causing it to turn white and potentially leading to coral death.

Front

What are the necessary ingredients for a buffer system?

Back

A weak acid and its conjugate base are necessary for a buffer system to function effectively.

Front

What is the role of CO2 in the carbonate buffer system?

Back

CO2 plays a crucial role in maintaining pH balance in the blood and other biological systems by shifting the equilibrium of the carbonate buffer.

Front

Explain the concept of pH.

Back

pH is a measure of the acidity or basicity of a solution, on a scale from 0 to 14, where 7 is neutral, below 7 is acidic, and above 7 is basic.

Front

What is the significance of coral reefs in marine ecosystems?

Back

Coral reefs provide habitat and shelter for many marine organisms, support biodiversity, and protect coastlines from erosion.

Front

How do buffers work in biological systems?

Back

Buffers in biological systems help maintain stable pH levels, which is essential for proper enzyme function and metabolic processes.

Front

What is the difference between a strong acid and a weak acid?

Back

A strong acid completely dissociates in solution, while a weak acid only partially dissociates, resulting in a higher pH.