Answer:
4. A 
4.(part 2) B
6. C
7. A
8. C
9. A
10. B
11. C
12. D
13. C
14. D
15. C
16. C
17. A
18. C
19. B
20. G
I Really hope this was helpful to you i tried my best to answer all the questions
Explanation:
 
        
             
        
        
        
Answer:
proton and neutron are located in the nucleus of an atom.And the electron surrounds the nucleus.
Explanation:
 
        
                    
             
        
        
        
Answer: The correct answer is black because the product of its side and mass is lower.
Explanation: Density of a substance is defined as the mount of matter that can be stored in a given volume.
Mathematically,

As, density is inversely proportional to the volume of the substance.
The substance will be more denser if it has less volume and it will be less denser if the volume is more.
We are given two cubes having different sides.
Volume of the cube is calculated by using the formula:

where, a = side of the cube.
Black: The side of this cube is 2 and volume will be =  
Yellow: The side of this cube is 3 and volume will be =  
As, the volume of black cube is less. So, this cube will be more denser.
Density of black cube: 
Density of Yellow Cube: 
Hence, black cube will be more denser  because the product of its side and mass is lower.
 
        
             
        
        
        
Dealing with children can be critical sometimes and when they experience disasters, handling and bringing them back to normal routine can be tough. But as a teacher, there are certain things can be done to bring them back to normal conditions. Children has a trust relationship with kids and they believe what are told so these are the ways they can be bring back to normal condition after experiencing a bad incident:
-	By providing them a normal, consistent and predictable routine
-	By avoiding mentioning the disaster to the children