Answer: Read through this, hope It helps
Explanation:
Covalent bonds are formed when nonmetals form compounds with each other by sharing electrons between them.
Ionic bonds are formed when one ion — an atom or molecule with a net charge, either positive or negative — finds another ion of the opposite charge to bond with, creating an overall neutral ionic compound.
A: Atoms and molecules is the correct answer.
Answer:

Explanation:
Given:
For a school event, 1/6 of the athletic field is reserved for the fifth -grade classes and the reserved part of the field is divided equally among the 4 fifth grade classes in the school.
To find: fraction of the whole athletic field reserved for each fifth class
Solution:
Fraction of the whole athletic field reserved for four fifth classes = 
So, fraction of the whole athletic field reserved for each fifth class = 
1 gram = 1000 mg
=>
1 mg = 1/1000 g
25 mg = 25* (1/1000) g = 25/1000 g = 0.025g
I know that I am late but do you still need an answer?