HESI A2 CHEMISTRY TEST BANK 2026
ACTUAL QUESTIONS AND SOLVED
QUESTIONS WITH EXPLANATION EXAM
PREP COMPLETE SOLUTION GRADED A+
⩥ mathematical sign. Answer: designates whether the number is positive
or negative (+/-)
⩥ significand. Answer: the base value of the number or the value of the
number when all the values of ten are removed
⩥ exponential/logarithm. Answer: a multiplier of the significand in
powers of 10. a positive exponential multiplies the significand by factors
of 10. a negative exponential multiplies the significand my factors of
1/10
⩥ tera. Answer: T-, 10^12, 1 trillion times
⩥ giga. Answer: G-, 10^9, 1 billion times
⩥ mega. Answer: M-, 10^6, 1 million times
⩥ kilo. Answer: k-, 10^3, 1 thousand times
,⩥ hecto. Answer: h-, 10^2, 1 hundred times
⩥ deka. Answer: D-, 10^1, 10 times
⩥ deci. Answer: d-, 10^-1, 1 tenth of
⩥ centi. Answer: c-, 10^-2, 1 hundredth of
⩥ milli. Answer: m-, 10^-3, 1 thousandth of
⩥ micro. Answer: µ-, 10^-6, 1 millionth of
⩥ nano. Answer: n-, 10^-9, 1 billionth of
⩥ pico. Answer: p-, 10^-12, 1 trillionth of
⩥ femto. Answer: f-, 10^-15, 1 quadrillionth of
⩥ metric system. Answer: a method to measure weight, length, and
volume
, ⩥ basic units of measurements of the metric system. Answer: kilo"gram"
-grams (weight), liter (volume), meters (length/distance)
⩥ prefix. Answer: "kilo"gram
-have the same meaning/value regardless of which basic unit of
measurement is used
-the quantifiers of the measurements used
⩥ 3 most common temperature systems. Answer: fahrenheit, celsius, and
kelvin
⩥ fahrenheit (F). Answer: the temperature measuring system used only
in the U.S., its territories, Belize, and Jamaica
-0 degrees F: freezing point of sea water or heavy brine at sea level
-32 degrees F: *freezing point of pure water* at sea level
-212 degrees F: *the boiling point of pure water* at sea level
-98.6 degrees F: *normal body temp for a person*
⩥ celsius (C). Answer: (sometimes called centigrade)
a temperature system used in the rest of the world and by the scientific
community
-0 degrees celsius: *freezing point of pure water* at sea level
-100 degrees celsius: *boiling point of pure water* at sea level
ACTUAL QUESTIONS AND SOLVED
QUESTIONS WITH EXPLANATION EXAM
PREP COMPLETE SOLUTION GRADED A+
⩥ mathematical sign. Answer: designates whether the number is positive
or negative (+/-)
⩥ significand. Answer: the base value of the number or the value of the
number when all the values of ten are removed
⩥ exponential/logarithm. Answer: a multiplier of the significand in
powers of 10. a positive exponential multiplies the significand by factors
of 10. a negative exponential multiplies the significand my factors of
1/10
⩥ tera. Answer: T-, 10^12, 1 trillion times
⩥ giga. Answer: G-, 10^9, 1 billion times
⩥ mega. Answer: M-, 10^6, 1 million times
⩥ kilo. Answer: k-, 10^3, 1 thousand times
,⩥ hecto. Answer: h-, 10^2, 1 hundred times
⩥ deka. Answer: D-, 10^1, 10 times
⩥ deci. Answer: d-, 10^-1, 1 tenth of
⩥ centi. Answer: c-, 10^-2, 1 hundredth of
⩥ milli. Answer: m-, 10^-3, 1 thousandth of
⩥ micro. Answer: µ-, 10^-6, 1 millionth of
⩥ nano. Answer: n-, 10^-9, 1 billionth of
⩥ pico. Answer: p-, 10^-12, 1 trillionth of
⩥ femto. Answer: f-, 10^-15, 1 quadrillionth of
⩥ metric system. Answer: a method to measure weight, length, and
volume
, ⩥ basic units of measurements of the metric system. Answer: kilo"gram"
-grams (weight), liter (volume), meters (length/distance)
⩥ prefix. Answer: "kilo"gram
-have the same meaning/value regardless of which basic unit of
measurement is used
-the quantifiers of the measurements used
⩥ 3 most common temperature systems. Answer: fahrenheit, celsius, and
kelvin
⩥ fahrenheit (F). Answer: the temperature measuring system used only
in the U.S., its territories, Belize, and Jamaica
-0 degrees F: freezing point of sea water or heavy brine at sea level
-32 degrees F: *freezing point of pure water* at sea level
-212 degrees F: *the boiling point of pure water* at sea level
-98.6 degrees F: *normal body temp for a person*
⩥ celsius (C). Answer: (sometimes called centigrade)
a temperature system used in the rest of the world and by the scientific
community
-0 degrees celsius: *freezing point of pure water* at sea level
-100 degrees celsius: *boiling point of pure water* at sea level
