Multiple Choice
In the SI (metric) system, what is the base unit for mass?
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1. Intro to General Chemistry
SI Units
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Which of the following is the SI base unit for time?
A
hour (h)
B
second (s)
C
day (d)
D
minute (min)
Verified step by step guidance1
Understand that the International System of Units (SI) defines base units for fundamental physical quantities.
Recall that time is one of the seven base quantities in the SI system.
Identify the SI base unit for time, which is the unit used as the standard for measuring time intervals.
Recognize that while hour (h), day (d), and minute (min) are commonly used units of time, they are derived units and not SI base units.
Conclude that the SI base unit for time is the second (s), which is defined based on a specific number of oscillations of radiation from a cesium atom.
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