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HESI A2 · Chemistry · HESI A2 Chemistry

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

What are proteins made up of?

A. Fatty acids

B. Amino acids

C. Nucleotides

D. Sugars

Expert Explanatory Rationale

Correct Answer: Amino acids

Question 2 of 5

Which compound is a Hydrogen or proton donor, corrosive to metals, causes blue litmus paper to become red, and becomes less acidic when mixed with a base?

A. Base

B. Acid

C. Salt

D. Hydroxide

Expert Explanatory Rationale

Correct Answer: Acid

Question 3 of 5

What is the energy required to remove the outermost electron from an atom called?

A. covalent bonding

B. electronegativity

C. atomic radius

D. ionization energy

Expert Explanatory Rationale

Correct Answer: ionization energy

Question 4 of 5

What is atomic mass?

A. Number of protons in an atom

B. Sum of protons and neutrons

C. Number of neutrons in an atom

D. Average weight of an element

Expert Explanatory Rationale

Correct Answer: Sum of protons and neutrons

Question 5 of 5

Where would you expect tap water to fall on the pH scale?

A. Between 1 and 3

B. Between 4 and 6

C. Between 6 and 8

D. Between 8 and 10

Expert Explanatory Rationale

Correct Answer: Between 6 and 8

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