1|Page
HESI A2 Chemistry Actual Exam 2026/2027 ||Verified
Exam!!!|| Elsevier Evolve & ATI Testing Standards
|Questions with Detailed Rationales for Nursing
Admission
What is a compound? - Answer-• Combination of 2 or
more elements or atoms.
• Made up of atoms of 2 or more different elements joined
by chemical bonds
Different types of solutions? - Answer-Compounds, Alloys,
Amalgams, Emulsions
Strongest type of chemical bond? - Answer-Covalent
What is a decomposition reaction? - Answer-A SINGLE
compound breaks down to form 2 or more simpler
substances
What is Deoxyribose? - Answer-A sugar used in the
formation of DNA
,2|Page
Attractions between opposite charges of polar moles? -
Answer-Dipole-dipole forces
What is a Disaccharide? - Answer-A double sugar
molecule made of 2 monosaccharides bonded together
through
dehydration synthesis.
When 2 monosaccharides are joined together this makes?
- Answer-Disaccharide
Type of chemical bond that share 2 electron pairs? -
Answer-Double covalent bond
Example of double replacement? - Answer-AB + CD = AD
+ CB
Example of Single replacement? - Answer-A + BC B + AC
Group of electrons revolving around the nucleus of an
atom, or known as a cloudlike
group of electrons? - Answer-Electron clouds
,3|Page
Mixtures of matter that readily separate such as water and
oil? - Answer-Emulsion
3 common temperature systems? - Answer-Fahrenheit,
Celsius, Kelvin
Celsius is based around? - Answer-Freezing & boiling
point of water
What is reduction? - Answer-GAIN of electrons
Gamma radiation: - Answer-• Similar to xrays
• Can be stopped by several feet of concrete or several
inches of Lead
• High energy electromagnetic radiation lacking charge
and mass
Unit measure of weight? - Answer-Gram
Basic units of METRIC system? - Answer-Gram, Liter
Meter
, 4|Page
What are Hydrogen bonds? - Answer-Weak attraction
between a hydrogen atom & another atom
If a Hydrogen is in a compound, what would its oxidation
number be? - Answer-+1
What is the oxidation number of any simple ion? - Answer-
+1 or -1 depending on the charge of the ion
How many kilograms are in a pound? - Answer-0.453592
kg
What is the temperature for freezing point of water in
Celsius? - Answer-0 degrees Celsius (32°F for Fahrenheit)
What is the conversion of Celsius to Fahrenheit? -
Answer-0°C = 32°F
What is the oxidation number of an element atom? -
Answer-0
HESI A2 Chemistry Actual Exam 2026/2027 ||Verified
Exam!!!|| Elsevier Evolve & ATI Testing Standards
|Questions with Detailed Rationales for Nursing
Admission
What is a compound? - Answer-• Combination of 2 or
more elements or atoms.
• Made up of atoms of 2 or more different elements joined
by chemical bonds
Different types of solutions? - Answer-Compounds, Alloys,
Amalgams, Emulsions
Strongest type of chemical bond? - Answer-Covalent
What is a decomposition reaction? - Answer-A SINGLE
compound breaks down to form 2 or more simpler
substances
What is Deoxyribose? - Answer-A sugar used in the
formation of DNA
,2|Page
Attractions between opposite charges of polar moles? -
Answer-Dipole-dipole forces
What is a Disaccharide? - Answer-A double sugar
molecule made of 2 monosaccharides bonded together
through
dehydration synthesis.
When 2 monosaccharides are joined together this makes?
- Answer-Disaccharide
Type of chemical bond that share 2 electron pairs? -
Answer-Double covalent bond
Example of double replacement? - Answer-AB + CD = AD
+ CB
Example of Single replacement? - Answer-A + BC B + AC
Group of electrons revolving around the nucleus of an
atom, or known as a cloudlike
group of electrons? - Answer-Electron clouds
,3|Page
Mixtures of matter that readily separate such as water and
oil? - Answer-Emulsion
3 common temperature systems? - Answer-Fahrenheit,
Celsius, Kelvin
Celsius is based around? - Answer-Freezing & boiling
point of water
What is reduction? - Answer-GAIN of electrons
Gamma radiation: - Answer-• Similar to xrays
• Can be stopped by several feet of concrete or several
inches of Lead
• High energy electromagnetic radiation lacking charge
and mass
Unit measure of weight? - Answer-Gram
Basic units of METRIC system? - Answer-Gram, Liter
Meter
, 4|Page
What are Hydrogen bonds? - Answer-Weak attraction
between a hydrogen atom & another atom
If a Hydrogen is in a compound, what would its oxidation
number be? - Answer-+1
What is the oxidation number of any simple ion? - Answer-
+1 or -1 depending on the charge of the ion
How many kilograms are in a pound? - Answer-0.453592
kg
What is the temperature for freezing point of water in
Celsius? - Answer-0 degrees Celsius (32°F for Fahrenheit)
What is the conversion of Celsius to Fahrenheit? -
Answer-0°C = 32°F
What is the oxidation number of an element atom? -
Answer-0
