Answer:
<em>Hello, Your answer will be B,C,E, And F.</em>
Explanation:
An element is a substance whose atoms have same number of protons which means all atoms in an element have same atomic number. Elements are simplest substances which cannot be broken down by physical changes or chemical reactions. Elements are classified by their names and symbols. Hope That Helps!
 
        
             
        
        
        
Answer: 11, Na, 23, 100, −9.529 ... phosphorus, 15, P, 31, 100, −24.441 ... manganese, 25, Mn, 55, 100, −57.706.
Explanation: Make me Brainelist
 
        
             
        
        
        
Answer: The universe consists of all physical objects on earth in space
Explanation: 
 
        
             
        
        
        
D=m/v. (Density equals mass over volume). 
So in your case density = 4.2/6 
Which equals 0.7 
Your units will be grams over milliliters 
So your answer is 0.7 g/ml
        
             
        
        
        
It's the other name of Water and it's formula would be H2O