EVERYDAY SCIENCE

Detailed explanation-1: -Zinc reacts with hydrochloric acid to produce hydrogen gas. This is a chemical property. Chemical change results in one or more substances of entirely different composition from the original substances.

Detailed explanation-2: -At room temperature, hydrogen chloride is a colorless to slightly yellow, corrosive, nonflammable gas that is heavier than air and has a strong irritating odor. On exposure to air, hydrogen chloride forms dense white corrosive vapors.

Detailed explanation-3: -Another way to say this is chemical properties describe what chemical reactions (changes) a chemical would or would not go through. In this question, reacting with HCl will tell us the chemical’s reactivity with HCl, and therefore determines a chemical property.

Detailed explanation-4: -Examples of chemical properties include flammability, toxicity, acidity, reactivity (many types), and heat of combustion.

Detailed explanation-5: -Hydrogen chloride is a highly odorous, colourless gas. Gaseous hydrogen chloride responds to the chlorides formed by active metals and their oxides, hydroxides, and carbonates. Such reactions only occur readily in the presence of humidity. Hydrogen chloride is completely dry and is very unreactive.