HESI - CHEMISTRY EXAM

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HESI - CHEMISTRY EXAM

QUESTIONS

Qs and Ans Expert- Explanation

This Exam contains:

-Guarantee passing score -100 Questions and Answers -format set of multiple-choice -Expert- Explanation

Question 1: B

Answer:

Atoms are made up of all except which of the following?

• Electrons

• Isotopes

• Protons

• Neutrons

Question 2: D

Answer:

A chemist dips a piece of blue litmus paper into an unknown compound. The litmus paper turns red. We can assume that the unknown compound is which of the following?

• Neutral

• Alkaline

• Has a pH of 10

• Acidic

Question 3: A

Answer:

If an atom has a negative charge, what is it called?

• Anion

• Neutrons

• Ion

• Cation

Question 4: A

Answer:

Which type of bond is formed when two atoms share one electron from each atom.

• Covalent bond

• Ionic bond

• Chemical bond

• Hydrogen bond

Question 5: B

Answer:

Which of the following terms best describes a covalent bond where electrons are shared unequally?

• Nonpolar

• Polar

• Double

• Single

Question 6: A

Answer:

Which of the following is the metric system's basic measure of weight?

• Gram

• Ton

• Ounce

• Pound

Question 7: A

Answer:

What is 5.106 x 10^6 equal to?

A) 5,106,000

B) 5,106,000,000

C) 0.005106

D) 0.000005106

Question 8: D

Answer:

What SI unit is used to measure the number of representative particles in a substance?

• Newton

• Ohm

• Ampere

• Mole

Question 9: C

Answer:

In regard to the atomic structure, which of the following statements is true?

• Electrons do not have an electrical charge

• Protons have a negative electrical charge

• The core of the atom's nucleus consists of protons and neutrons

• Neutrons have a positive electrical charge

Question 10: A

Answer:

Which of the following is the deposition of a liquid or a solid from its vapor?

• Condensation

• Vaporization

• Oxidation

• Evaporation

Question 11: C

Answer:

The main units of the metric system are grams, liters and which of the following?

• Kilometers

• Feet

• Meters

• Millimeters

Question 12: B

Answer:

Which of the following is considered mechanical energy?

• Water flowing down a waterfall

• Wind as it turns a windmill

• A fire burning at a campground

• Food that's been fully cooked