SIGNIFICANT DIGITS INTRODUCTION UNIT #1 INTRODUCTION TO CHEMISTRY

What are significant digits? Scientists use significant digits to indicate the accuracy of a measurement

Significant Digit Rules All non-zero digits are significant 13479 Hugged zeros (zeros between other significant digits) are significant 4.002 Leading zeros (zeros in front of non-zero digits) are not significant 0.0037 Trailing zeros (zeros that are after non-zero digits) are significant only if they are to the right of the decimal point 1070 1070.0

Practice 0.02 0.020 501 501.0 5000 50.000 6051.00 0.0005 0.1020 10.001 12001.20 0.0001011

Exact numbers Numbers which have an infinite number of significant digits