I would maybe say solid at higher temps
        
             
        
        
        
Answer:
1230 
Explanation:
1.20×1025=1230 is your answer 
 
        
             
        
        
        
It is an element. Aluminun foil is aluminum prepared in thin leaves.
        
                    
             
        
        
        
Answer: Physical change : tearing of paper, fixing of wtaer
Chemical change:  rusting of iron ,  electrolysis of water, Rancidification
Explanation:
Physical change is a change in which there is no rearrangement of atoms and thus no new substance is formed. There is only change in physical state of the substance.
Example:  tearing of paper, fixing of wtaer
Chemical change is a change in which there is rearrangement of atoms and thus new substance is formed. There may or may not be a change in physical state.
Example: rusting of iron ,  electrolysis of water, Rancidification
 
        
             
        
        
        
Well, an independent variable ids the thing that  stays the same and a dependent variable is the thing that changes.