The Bubbles That Form in Water After It Has Been

question 48

Multiple Choice

The bubbles that form in water after it has been boiling for some time are __________

• A) empty space.
• B) H₂(g) and O₂(g) gases.
• C) the vapor phase of water, H₂O(g).
• D) filled with air.
• E) superhot water, H₂O( ).

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Definitions:

Adventitia

The outermost layer of the wall of a blood vessel or other tubular structure, consisting of connective tissue.

Cortex

The outer layer of an organ or structure, such as the cerebral cortex of the brain or the cortex of a plant root or stem.

Medulla

The innermost part of an organ or structure, such as the medulla oblongata in the brain which controls vital body functions.

Renal Papilla

The tip of the renal pyramid in the kidney that projects into the minor calyx, where urine is collected before passing into the ureter.