RULES Scientific Notation Base number MUST be between 1.00 and 9.99

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Presentation transcript:

RULES Scientific Notation Base number MUST be between 1.00 and 9.99 Numbers < 1 have a negative exponent. Numbers >1 have a positive exponent.

65,000 kg  6.5 × 104 kg Scientific Notation Converting into Scientific Notation: Move decimal until there’s 1 digit to its left. Places moved = exponent. Large # (>1)  positive exponent Small # (<1)  negative exponent Only include significant digits in the base number.

Practice Problems D. Scientific Notation 2,400,000 g 2.4  106 g 0.00256 kg 7  10-5 km 6.2  104 mm 2.4  106 g 2.56  10-3 kg 0.00007 km 62,000 mm

Scientific Notation Type on your calculator: EXP EE EXP EE EXE 5.44 7 Calculating with Scientific Notation (5.44 × 107 g) ÷ (8.1 × 104 mol) = Type on your calculator: EXP EE EXP EE ENTER EXE 5.44 7 8.1 ÷ 4 = 671.6049383 = 670 g/mol = 6.7 × 102 g/mol