CHMB16H3 Study Guide - Final Guide: Logarithm, Exponentiation
Document Summary
Significant figures: very important, huge source of marks lost, in scientific notation, indicate accuracy of a measurement. The numbers after a decimal obviously contain infinite 0s (i. e. 1. 600000000) but only report the zeros if they are of significance: examples: 1. 6 x 106 means the zeros aren"t important, but 1. 6000000 x 106 shows their importance. Rules: all non-zero numbers are significant (1-9, all zeros between significant number (internal zeros) are significant. Example: 1000003 has 7 sig figs: a zero after a decimal point is significant when bound by sig figs to left. This shows that the accuracy of the amount is known (like it"s exactly 1002. 0: zeros to the left of a sig fig not bound to the left by another sig fig are not significant. Example: 0. 01 has 1 sig fig but 1. 01 has 3. 0. 01 can be written out as 1 x 10-2: numbers ending in zeros written without decimal places have inherent ambiguity (like is 6,000,000 really.
