Below is our free HESI A2 Chemistry practice test, which includes 40 challenging practice questions. It’s very important for all healthcare professionals to have a solid understanding of chemistry to help them provide safe and effective care. These HESI Chemistry practice questions are designed to cover the major concepts found on the test. Chemistry can be a difficult topic, so start your test prep right now with our free practice test.
It cannot be determined.
There is no purpose.
The purpose is to handle bigger numbers more easily.
The purpose is to handle smaller numbers more easily.
The purpose is to handle both smaller and bigger numbers more easily.
deci = tenth
centi = hundredth
milli = thousandth
micro = millionth
nano = billionth
pico = trillionth
Electrons do not orbit an atom’s nucleus; they exist in electron clouds surrounding the nucleus.
As each orbital of an atom is filled to capacity, electrons begin occupying a higher energy orbital.
Most of the volume of an atom is empty space.
Atoms are most stable when their outer electron shell (valence shell) is incomplete.
Elements which have the same number of protons but a different number of neutrons.
Elements with the same atomic number but different atomic mass numbers.
Elements which have a different number of protons than electrons.
Both A and B are correct.
A failed reaction.
A decrease in temperature.
A completed reaction.
Adenine, Guanine, Cytosine, and Thymine
Uracil, Adenine, Guanine, and Thymine
Amenine, Cytosine, Galvine, Thymine
Ribose, Phosphate, Pentose, and Amine
All of the above.
decay into a stable form.
degrade into a further unstable form.
Alpha, Beta, Gamma
Beta, Alpha, Gamma
Gamma, Beta, Alpha
Gamma, Alpha, Beta
none of the above.
Electrons, neutrons, protons
Stoichiometry describes the chemical reactions between the elements of a compound.
Stoichiometry is the calculation of relative quantities of reactants and products in chemical reactions.
Stoichiometry describes the color flares expected based on the participants of a chemical reaction.
Stoichiometry describes the fundamental properties of atoms universally.
Number of protons.
Number of neutrons.
Number of electrons.
Number of quarks.
Increase the energy required for the reaction to take place
Increase the time required for the reaction to take place
Increase the rate at which the reaction takes place
Reduce the amount of products in the reaction
An amine group, a carboxyl group, and a functional R-group.
An amine group, a polar side chain, and a non-polar side chain.
An amide group, an alcohol group, and a functional R-group.
An amine group, and an amide group.
0.5 mol MgO
1.0 mol MgO
1.5 mol MgO
2.0 mol MgO
Now divide the number of moles by the number of liters of the solution:
electronegativity values for the elements involved in the bond.
atom number for the elements involved in the bond.
concentrations of the elements involved in the bond.
quantities of the elements involved in the bond.
carbon monoxide and oxygen
carbon dioxide and water
heat and water
carbon dioxide and heat
Two amino acids
Two ammonium molecules
PO4 and another molecule