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HESI A2 - CHEMISTRY EXAM QUESTIONS
Actual Qs and Ans Expert-Verified Explanation
This Exam contains:
-Guarantee passing score -31 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: The breakdown of what provides the energy needed for chemical reactions in the body?
Answer:
ATP
Question 2: The change in state from a gas to liquid is called what?
Answer:
Condensation Question 3: High density matter, which is little affected by pressure, and holds its shape, is classified as?
Answer:
Solid Question 4: Bleaches, disinfectants, & salts often contain elements from which nonmetal group?
Answer:
Halogens
Question 5: A catalyst increases what in a chemical reaction?
Answer:
Speed Question 6: Simple carbohydrates composed of a single ring are also called what?
Answer:
Monosaccharides Question 7: In the formula C12H22O11 the 12 behind the carbon represents the 12 what of carbon?
Answer:
Atoms
Question 8: Positively charged particles in an atom are called what?
Answer:
Protons
Question 9: The vertical columns of the periodic table are called what?
Answer:
Groups
Question 10: The bond between water molecules is called what?
Answer:
Covalent bond
Question 11: Viscosity increases in what circumstance?
Answer:
Temperature decrease Question 12: DNA & RNA contain many of the same nitrogen-containing bases. Which base is only found in RNA?
Answer:
Uracil
Question 13: Which of the following is a water-soluble Vitamin D, Vitamin E, Vitamin C or Vitamin K?
Answer:
Vitamin C Question 14: What is not a component of lipids Carbon, Oxygen, Nitrogen or Hydrogen?
Answer:
Nitrogen Question 15: Using the Lewis-dot structure model, how many dots would Carbon have?
Answer:
4
Question 16: What is true of gas particles?
Answer:
They exert no force on one another
Question 17: What is the most abundant element in the universe?
Answer:
Hydrogen Question 18: A particle with a negative or positive charge is referred to as what?
Answer:
Ion
Question 19: What is the molar mass of Calcium if the atomic mass is 40 amu?
Answer:
40g
Question 20: Dihydrogen monoxide is better known as ?
Answer:
Water
Question 21: What would produce Hydrogen ions in an aqueous solution and would turn a litmus test from blue to red?
Answer:
Vinegar
Question 22: What is the name of NO2?
Answer:
Nitrogen dioxide Question 23: In an ionic bond, a positively charged ion is attracted to what type of ion?
Answer:
Anion
Question 24: What is not a property of water?
Answer:
Density of liquid form is less than solid form Question 25: A solution that contains the maximum amount of dissolved solute is said to be what?
Answer:
Saturated
Question 26: Which is not a property of metals?
Answer:
Low Density
Question 27: Reactions that absorb heat are called what?
Answer:
Endothermic
Question 28: Which pH would be the most basic, pH 4,
pH 5, pH 7 or pH 9?
Answer:
pH
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