gramme or kilogramme (one kilogramme is 1000 grammes)
The mass of a fish tank should be measured in kilograms.
Metric
The metric standard unit of mass is the kilogram (Kg).
The SI (metric) unit for mass is the kilogram.
The SI unit for mass in the metric system is the kilogram.
A neutron is an electrically neutral subatomic particle. A Newton is the metric unit of force. A Kilogram is the metric unit of mass. We have no idea what a 'newtron' is.
The SI unit of mass is the Kilogram.
The metric standard unit of mass is the kilogram (Kg).
The mass of a beetle in metric units is 5 metric units no joke!
Feet is an unit of volume and metric ton is an unit of mass, you can't compare them directly. We should know a density of items in this container to calculate their mass.
The kilogram is the Base Unit (not 'basic' unit) in the SI system (not 'metric system') for mass.
The base unit of mass is the kilogram.