It's absolutely TRUE...........
        
             
        
        
        
The standard International System of Units (SI) unit of mass is the kilogram(kg). The kilogram is 1000 grams (g), first defined in 1795 as one cubic decimeter of water at the melting point of ice.
        
                    
             
        
        
        
Hi , butter is a class of colloids called emulsions , so your answer is colloid.