Describe how a Chemical property is different between NaCl and its elements. Describe how a Physical property is different between NO2 and its elements

See detailed explanation.

Explanation:

Hello.

a. In this case, considering sodium chloride, sodium a chlorine a typical chemical reaction could be used in order to stand out their differences. For instance, when mixed with water sodium chloride just dissolves in it, sodium readily reacts yielding sodium hydroxide via a very exothermic chemical reaction which also fires on sodium and hydrogen gas s given off:

Moreover, chlorine reacts with water to yield hypochlorous acid and hydrochloric acid in a very slow equilibrium reaction:

b. In this case, regarding nitrogen dioxide, nitrogen and oxygen, it is widely known that nitrogen dioxide is a red-brown gas which is also toxic whereas both nitrogen and oxygen are colorless.

Best regards.

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

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).