Scientific Notation & Significant Figures
This video discusses how scientific notation is used to express numbers that are too large or too small to be compactly written in decimal form. It also explains how to express Avogadro's number in scientific notation.
This study guide outlines how to convert quantities written in scientific notation to standard form, and from standard form to scientific notation. It also provides examples of calculations and approximations with scientific notation, and explains significant figures.
This video explains the seven basic units in the SI system: the meter (m), the kilogram (kg), the second (s), the kelvin (K), the ampere (A), the mole (mol), and the candela (cd). It also explains how to determine using the following five rules: (1) All non-zero numbers are significant, (2) Zeros between two non-zero digits are significant, (3) Leading zeros are not significant, (4) Trailing zeros to the right of the decimal are significant, (5) Trailing zeros in a whole number with the decimal shown are significant.