HESI A2 Chemistry Updated for 2024-Graded A+

scientific notation the scientific system of writing numbers -composted of 3 parts: mathematical sign, the significand, and the exponential/logarithm mathematical sign designates whether the number is positive or negative (+/-) significand the base value of the number or the value of the number when all the values of ten are removed exponential/logarithm 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 T-, 10^12, 1 trillion times giga G-, 10^9, 1 billion times mega M-, 10^6, 1 million times kilo k-, 10^3, 1 thousand times hecto h-, 10^2, 1 hundred times deka D-, 10^1, 10 times deci d-, 10^-1, 1 tenth of centi c-, 10^-2, 1 hundredth of milli m-, 10^-3, 1 thousandth of micro µ-, 10^-6, 1 millionth of nano n-, 10^-9, 1 billionth of pico p-, 10^-12, 1 trillionth of femto f-, 10^-15, 1 quadrillionth of metric system a method to measure weight, length, and volume basic units of measurements of the metric system kilo"gram" -grams (weight), liter (volume), meters (length/distance) prefix "kilo"gram -have the same meaning/value regardless of which basic unit of measurement is used -the quantifiers of the measurements used