HESI A2 CHEMISTRY
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1. scientific nota- the scientific system of writing numbers
tion -composted of 3 parts: mathematical sign, the significand, and the exponen-
tial/logarithm
2. mathematical designates whether the number is positive or negative (+/-)
sign
3. significand the base value of the number or the value of the number when all the values of
ten are removed
4. exponential/loga- a multiplier of the significand in powers of 10. a positive exponential multiplies the
rithm significand by factors of 10. a negative exponential multiplies the significand my
factors of 1/10
5. tera T-, 10^12, 1 trillion times
6. giga G-, 10^9, 1 billion times
7. mega M-, 10^6, 1 million times
8. kilo k-, 10^3, 1 thousand times
9. hecto h-, 10^2, 1 hundred times
10. deka D-, 10^1, 10 times
11. deci d-, 10^-1, 1 tenth of
12. centi c-, 10^-2, 1 hundredth of
13. milli m-, 10^-3, 1 thousandth of
14. micro µ-, 10^-6, 1 millionth of
15. nano n-, 10^-9, 1 billionth of
, HESI A2 CHEMISTRY
HESI A2 CHEMISTRY
Study online at https://quizlet.com/_498y3s
16. pico p-, 10^-12, 1 trillionth of
17. femto f-, 10^-15, 1 quadrillionth of
18. metric system a method to measure weight, length, and volume
19. basic units kilo"gram"
of measure- -grams (weight), liter (volume), meters (length/distance)
ments of the met-
ric system
20. prefix "kilo"gram
-have the same meaning/value regardless of which basic unit of measurement is
used
-the quantifiers of the measurements used
21. 3 most common fahrenheit, celsius, and kelvin
temperature sys-
tems
22. fahrenheit (F) 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*
23. celsius (C) (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
-37 degrees celsius: *normal body temp for a person*