HESI A2 V2 CHEMISTRY EXAM QUESTIONS

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HESI A2 V2 CHEMISTRY EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -73 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Oxidation state of any simple ion...

Answer:

+1 or -1 depending on the charge of the ion

Question 2: Intermolecular forces in order of strongest to weakest...

Answer:

Hydrogen, Dipole Dipole, London Dispersion

Question 3: Oxygen oxidative number in any compound...

Answer:

-2

Question 4: How many amino acids are essential for human life...

Answer:

20 amino acids

Question 5: Reactants are forming products at the same rate products are forming reactants

Answer:

Equilibrium means...

Question 6: When an element loses one or more electrons...

Answer:

Cation

Question 7: Protons in nucleus

Answer:

Atomic number...

Question 8: Increasing atomic number...

Columns = groups Rows = periods

Answer:

Elements on periodic table arrangement

Question 9: Increasing surface area...

Answer:

Increases risk of collision

Question 10: When an element gains one or more electrons...

Answer:

Anion

Question 11: Proteins are composed of..

Answer:

Amino acids

Question 12: Glycogen is what kind of starch...

Answer:

Animal starch

Question 13: Polar

Answer:

Electrons are unequally shared

Question 14: Readily mixed separate matters...

Answer:

Emulsion

Question 15: -The neutrality of an atom (same p+, e-; different neutrons)

-Different kinds of the same atom with varying weights

Answer:

Isotopes represent...

Question 16: Non-polar and dispersion relationship...

Answer:

Dispersion forces are found in which covalent bond...

Question 17: What is Kelvin based around...

Answer:

Absolute zero

Question 18: Moving up or down 10x more acidic or basic

Answer:

Moving from acidic to basic and vice versa...Question 19: Alpha radiation has a +__ and contains __ protons and __ neutrons; they admit __ ions...

Answer:

+2, 2, 2, Helium

Question 20: Boiling point of water (F)...

Answer:

212 degrees Fahrenheit

Question 21: Cellulose if what kind of starch...

Answer:

Plant starch Question 22: During a covalent bond when electrons are unequally shared between atoms

Answer:

How is a dipole created...

Question 23: Neutral pH....

Answer:

7

Question 24: Molarity formula...

Answer:

Molarity = moles of solute/liters of solution

Question 25: Temperature of freezing point of water (F)...

Answer:

32 degrees Fahrenheit

Question 26: How many moles are present in 2 mols of O2...

Answer:

63.9976 g (MM of Oxygen x 2 ((diatomic element O2)) ) (Answer x 2 moles)

Question 27: -Protons + Neutrons in nucleus

-Average mass of an element's isotopes

Answer:

Atomic mass...

Question 28: -OIL-RIG

-Oxidation and Reduction

Answer:

-Oxidation is loss; Reduction is gain -Oxidizing agent gains; Reducing agent loses