Using the diagram to guide your answer, which of the following statements are true? Choose all that apply. I The reactants (initial) contain 6 atoms of hydrogen and 2 atoms of nitrogen
The products (final) contain two atoms of nitrogen and six atoms of hydrogen
I The number of atoms is the same in the initial and final boxes
2 molecules of nitrogen react with 3 molecules of hydrogen to produce 2 molecules of ammonia
The number of molecules is the same in the initial and final boxes

The reactants (initial) contain 6 atoms of hydrogen and 2 atoms of nitrogen

The products (final) contain two atoms of nitrogen and six atoms of hydrogen

The number of atoms is the same in the initial and final boxes

Explanation:

Atom is the smallest unit of an element which may or may not exist independently.

Molecule is the smallest unit of a pure substance that consists of two or more atoms held together by a chemical bond .

Molecule of a Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.  Example:  

Molecule of an element is a pure substance formed by combination of same types of atoms bonded by a chemical bond. Example: and

Here one molecule of nitrogen () combines with 3 molecules of hydrogen () to give 2 molecules of ammonia. ().

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.