CAS CH 102 Lecture Notes - Lecture 23: Graduated Cylinder, Atomic Mass, Scientific Notation
Document Summary
Scientific notation: a number that is greater than or equal to 1 but less than 10, multiplied by 10 to the whatever power of decimal places. These units can also be found in table d of your reference table. Meter, centimeter, millimeter, kilometer m, cm, mm, km. Second, minute, hour, day, year s, min, h, d, y. When a measurement is made using a ruler or a graduated cylinder, an estimate is required. If the measurement is between 4. 8 and 4. 9, the estimate recorded should be either 4. 81, 4. 82, 4. 83, etc. , as long as it has one extra decimal place. If a measurement is made such that it is on 4. 8, it is recorded simply as 4. 80. If a ruler"s smallest unit is a centimeter, the recorded measurement should be to tenths of a centimeter. 32cm is wrong 32. 4cm is correct . Trailing zeroes only count as significant figures if.
