HESI A2 CHEMISTRY / ACTUAL EXAM NEWEST 2025 / 60+ QUESTIONS WITH DETAILED, CERTIFIED ANSWERS (100% CORRECT).

HESI A2 CHEMISTRY / ACTUAL EXAM NEWEST
+ QUESTIONS WITH DETAILED,
CERTIFIED ANSWERS (100% CORRECT).
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Terms in this set (60)

The number of protons in a Atomic Number
given element.


An average of the masses of Atomic Weight/ Atomic mass number
each of the iostopes of an
element as they occur in
mature. (Represents the
number of protons and the
number of neutrons in an
element because electrons
essentially have no mass).

, What group has a +1 charge IA



What group has a +2 charge IIA



What group has a +3 charge IIIA



Density of an object realtive Specific Gravity
to water

Energy of motion Kinetic Energy

Stored energy Potential Energy

Form of energy, measured in Heat
calories

The amount of heat Calorie
necessary to raise the
temperature of 1g of water
by 1 degree celsius.


Combination of two or more Mixture
pure substances.

Isotope
Atoms with the same
number of protons but
different numbers of
neutrons.


Elements in group 8A of the Noble Gases
periodic table. Have no
charge and are gases under
normal conditions. (Helium,
Neon, Argon,
Krypton, Xenon, Radon)

How many electrons fit in 2,8,18,32
shells 1, 2, 3 & 4?