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Multiple Choice
Which SI unit is used to measure the mass of a substance?
A
meter (m)
B
kilogram (kg)
C
liter (L)
D
second (s)
Verified step by step guidance
1
Understand that the International System of Units (SI) defines standard units for measuring different physical quantities.
Recall that mass is a measure of the amount of matter in a substance, which is different from length, volume, or time.
Identify the SI base unit for mass, which is the kilogram, abbreviated as kg.
Note that meter (m) is the SI unit for length, liter (L) is commonly used for volume but is not an SI base unit, and second (s) is the SI unit for time.
Therefore, the correct SI unit to measure the mass of a substance is the kilogram (kg).