CHEM 1001 Study Guide - Quiz Guide: Metric System, Trailing Zero, Dimensional Analysis
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Global warming: the gradual increase of global temperatures: global temperatures: affect everything from agriculture to weather and ocean levels. Unit: a standard, agreed-on quantity by which other quantities are measured; extremely important in reporting and working with scientific measurements; must always be included. Step 1: move the decimal point to obtain a number between 1 and 10. Step 2: write the result multiplied by 10 raised to the number of places you moved the decimal point. If moved to the left, the exponent is positive. If moved to the right, the exponent is negative. Scientific numbers: reported so that every digit is certain except the last, which is estimated. Significant figures (or digits): the non-place-holding digits in a reported measurement; represent the precision of a measured; the greater the number of sigfigs the greater the precision of the measurement. To determine the number of significant figures in a number, follow these rules:
