In a phase diagram, which of the following is the term used for a substance held at a temperature and pressure where the solid, liquid, and gaseous states of a substance exist simultaneously?

A. Triple point

B. Critical temperature

C. Absolute zero

D. Critical point

Answer Explanation:

A phase diagram is a graphical representation of the physical states of a substance under different conditions of temperature and pressure. A phase diagram usually has pressure on the y-axis and temperature on the x-axis. As we move along the curves of the phase diagram, we can see how the state of the substance changes from solid to liquid to gas, or vice versa.

Therefore, the Correct Answer is A.

Q #1: Which of the following is the structure through which blood exits the glomerulus?

A. Proximal tubule

B. Distal tubule

C. Afferent arteriole

D. Efferent arteriole

Answer Explanation

The glomerulus is a network of capillaries that filters blood and forms the primary urine. The blood enters the glomerulus through the afferent arteriole and leaves through the efferent arteriole. The efferent arteriole has a smaller diameter than the afferent arteriole, creating a high pressure in the glomerulus that facilitates filtration.
Q #2: Nitrogen gas is an extremely stable molecule because its structure contains which of the following?

A. lonic bonds

B. Triple covalent bonds

C. Resonance bonds

D. Hydrogen bonds

Answer Explanation

Triple covalent bonds. Nitrogen gas consists of two nitrogen atoms that share three pairs of electrons, forming a triple bond. This bond is very strong and requires a lot of energy to break. Ionic bonds, resonance bonds, and hydrogen bonds are weaker types of bonds that do not occur in nitrogen gas.
Q #3: Which of the following physiological responses is caused by the release of antidiuretic hormone?

A. Decrease in the concentration of calcium in the glomerulus

B. Increase in water reabsorption in the collecting duct

C. Increase in the concentration of calcium in the glomerulus

D. Decrease in water reabsorption in the collecting duct

Answer Explanation

Anti-diuretic hormone (ADH) is a hormone that regulates the amount of water in the body. It is produced by the hypothalamus and released by the posterior pituitary gland. ADH acts on the kidneys to increase the reabsorption of water from the filtrate back into the blood. This reduces the volume and increases the concentration of urine.

Free Access on TEAS 7 Exams and Study Notes

Access to all TEAS 7 Exams
Performance Tracking and Analysis
Well Documented and Explained Questions and Answers
2000+ Questions and Correct Answers: Answers Well Explained
Libary of Detailed StudyNotes
Topical Questions and Answers on Examinable topics

Join Now

In a phase diagram, which of the following is the term used for a substance held at a temperature and pressure where the solid, liquid, and gaseous states of a substance exist simultaneously?

More Questions on TEAS 7 Science

Q #1: Which of the following is the structure through which blood exits the glomerulus?

Answer Explanation

Q #2: Nitrogen gas is an extremely stable molecule because its structure contains which of the following?

Answer Explanation

Q #3: Which of the following physiological responses is caused by the release of antidiuretic hormone?

Answer Explanation

Free Access on TEAS 7 Exams and Study Notes

TEAS 7 Exams (Q&A)

TEAS 7 Study Notes

TEAS 7 Topical Tests

TEAS 7 Study Guides

Quick Links

Refer a Friend