Sand is made up of atoms of one kind.

true
false

False

Explanation:

Sand is most commonly made of silicon dioxide (SiO^2)

but can also be made of a lot of different materials

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).