Question

1. the ____ is the si base unit used to measure the amount of a substance (0.5 points) *

○ liter
○ mole
○ kilogram
○ gram

Explanation:

To determine the correct SI base unit for measuring the amount of a substance, we analyze each option:

• Liter is a unit of volume, not for the amount of a substance.
• Mole is the SI base unit specifically defined for measuring the amount of a substance (it represents a specific number of particles, like atoms, molecules, etc.).
• Kilogram and Gram are units of mass, used to measure the mass of a substance, not the amount (in terms of the number of particles or moles).

Answer:

B. Mole