HESI A2 CHEMISTRY REVIEW NURSE SHAI EXAM

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HESI A2 CHEMISTRY REVIEW NURSE SHAI EXAM

QUESTIONS

Qs and Ans Expert- Explanation

This Exam contains:

-Guarantee passing score -79 Questions and Answers -format set of multiple-choice -Expert- Explanation

Question 1: How do you calculate the molecular weight?

Answer:

by adding the atomic masses in a molecule.

Question 2: Freezing temp in Fahrenheit

Answer:

32 degrees

Question 3: Reduction

Answer:

gain of electrons

Question 4: single replacement reaction

Answer:

Reaction consist of more than one active metal reacting with ionic compounds. Once elements starts and ends up kicking another element out.AB + C -> A + BC

Question 5: Chemistry

Answer:

The study of the properties of matter and how matter changes

Question 6: Ionic bond

Answer:

An electrostatic attraction between two opposites charged ions, cations, or anion. Generally formed between a nonmetal and metal.

example: N CL

Question 7: Lipids

Answer:

Energy-rich organic compounds, such as fats, oils, cholesterol, and fatty acids that are made of carbon, hydrogen, and oxygen.

Question 8: peptides or polypeptides.

Answer:

groups of fewer than 30 amino acids

Question 9: How many amino acids are there

Answer:

20 amino acids

Question 10: Solvent

Answer:

A liquid substance capable of dissolving other substances

Question 11: types of carbohydrates

Answer:

monosaccharides, disaccharides, polysaccharides

Question 12: pH of blood

Answer:

7.35-7.45

Question 13: Intermolecular forces

Answer:

These are not bonding interactions between atoms within a molecule but instead are weaker forces of attraction between whole molecules.

Question 14: Dispersion forces

Answer:

are the weakest of all the intermolecular forces. Sometimes the electrons within an element or compound will concentrate themselves on one side of an atom. This causes a momentary or temporary dipole, which would be attracted to another momentary dipole of opposite charge in another near element or compound.

Question 15: The pH scale

Answer:

measurement system used to indicate the concentration of hydrogen ions (H+) in solution; ranges from

• to 14

Question 16: Carbohydrates

Answer:

Main function is to provide energy

Question 17: An aerobic organism or cell requires ____ to sustain life.

Answer:

oxygen

Question 18: Physical change

Answer:

transformation that do not produce a new substance

example: paper being cut up= still paper but smaller.

Question 19: Solid

Answer:

Definite shape and volume high density in-compressible

Question 20: Boiling point in Fahrenheit

Answer:

212 degrees

Question 21: How many amino acids does albumin contain?

Answer:

585

Question 22: mixture

Answer:

material composed of two or more elements or compounds that are physically mixed together but not chemically combined. the substances retain their distinct identities.

Question 23: solution

Answer:

homogeneous mixture consisting of a solvent and solute

Question 24: Alpha radiation

Answer:

The largest of the radioactive waves Can be stopped by a sheet of paper it emits a helium nuclei

Question 25: Homogeneous mixture

Answer:

a mixture in which the composition is uniform throughout