HESI A2 CHEMISTRY QUESTIONS &
ANSWERS LATEST UPDATE 2024
1.scientific notation - ANS -the scientific system of writing numbers
-composted of 3 parts: mathematical sign, the significand, and the
exponential/logarithm
2.mathematical sign - ANS -designates whether the number is positive or negative (+/-)
3.significand - ANS -the base value of the number or the value of the number when all the values of ten are removed 4.exponential/logarithm - ANS -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
5.tera - ANS -T-, 10^12, 1 trillion times
6.giga - ANS -G-, 10^9, 1 billion times
7.mega - ANS -M-, 10^6, 1 million times
8.kilo - ANS -k-, 10^3, 1 thousand times
9.hecto - ANS -h-, 10^2, 1 hundred times 10.deka - ANS -D-, 10^1, 10 times
11.deci - ANS -d-, 10^-1, 1 tenth of
12.centi - ANS -c-, 10^-2, 1 hundredth of
13.milli - ANS -m-, 10^-3, 1 thousandth of
14.micro - ANS -µ-, 10^-6, 1 millionth of
15.nano - ANS -n-, 10^-9, 1 billionth of
16.pico - ANS -p-, 10^-12, 1 trillionth of
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