Answer:
a covalent would be the two that are nonmetals
 
        
             
        
        
        
Answer:
B. Mixture
because air,sea water and alloy are example of Mixture
 
        
             
        
        
        
Answer:
The acceleration of the object equals the gravitational acceleration. The mass, size, and shape of the object are not a factor in describing the motion of the object. So all objects, regardless of size or shape or weight, free fall with the same acceleration
 
        
             
        
        
        
Answer:
True
Explanation:
Significant digits include non-zero digits (unless the zero is between two non-zero numbers)
In 12,785.000, there are 5 non-zero digits:
1 2 7 8 5