Which unit is commonly used to express mass in the metric system?

Which unit is commonly used to express mass in the metric system?

• A. Grams
• B. Liters
• C. Meters
• D. Seconds

Answer: (A)

Mass is the amount of matter in an object, and in the metric system the common unit used to express that amount is the gram. Grams are small, so they’re convenient for everyday objects (a paperclip is about 1 gram). For larger masses, you’ll hear about kilograms, where 1 kilogram equals 1000 grams. Liters measure volume, not mass; meters measure length; seconds measure time. So grams specifically denote mass, making it the right pick.

Mass is the amount of matter in an object, and in the metric system the common unit used to express that amount is the gram. Grams are small, so they’re convenient for everyday objects (a paperclip is about 1 gram). For larger masses, you’ll hear about kilograms, where 1 kilogram equals 1000 grams. Liters measure volume, not mass; meters measure length; seconds measure time. So grams specifically denote mass, making it the right pick.