Answer:
Explanation:
Lattice energy is the energy required to separate one mole of an ionic solid compound into its components gaseous cations and anions.
Due to increase in size of the ions, the lattice energy decreases while the lattice energy increases as the charge of the ions increases.
When the size increase, the distance between the nuclei also increase leading a decrease the force of attraction between the nuclei
 
        
             
        
        
        
Answer:
I have a screenshot of this. 
Explanation:
 
        
             
        
        
        
Air caught in the ball of foil makes the ball less dense than water 
        
             
        
        
        
Answer: The forces acting on both of them will increase in magnitude.
Explanation:
According to Coulomb's law, the electrostatic force between two bodies is proportional to the product of their two charges. If the charge on A is increased this product increases in size (it must have been non-zero to begin with, since there was a force between them at first). Thus, the force between them rises.
 
        
             
        
        
        
Answer: when in doubt go with B
Explanation: