CHEMISTRY MIDTERM REVIEW Q&A

CHEMISTRY MIDTERM REVIEW

, CHEMISTRY MIDTERM REVIEW
Areas Covered
1. CONVERSIONS IN METRIC UNITS: How many kilograms are in 143 grams?
2. CONVERSIONS WITH ENGLISH UNITS: How many milliliters are in 13.5 oz?
3. Is ATM (atmospheres) a standard number?




1.) CONVERSIONS IN METRIC UNITS
How many kilograms are in 143 grams?
Using KHDBDCM
Starting with Grams (g) – base unit. Moving to kilograms (kg); move the decimal three spaces to
the right
143 g – 0.143 g


Using conversion factors
KNOW that kilo = 1000 base
143 g x (1 kg/1000g ) = 0.143 kg




2.) CONVERSIONS WITH ENGLISH UNITS
How many milliliters are in 13.5 oz?
MUST USE CONVERSION FACTORS (oz, lb, feet, inches…)
Always start with what you know…. Figure out where to go
13.5 oz ? mL
13.5 oz 1 cup 1 pt 1 qt 1L 1000 mL
8 oz 2 cups 2 pt 1.06 qt 1L


= 398 mL are in 13.5 oz