Question

which of the following is a common household items made of carbon hydrogen and oxygen

a. water

b. vinegar

c. salt​

Answer 1

Answer:

a.Water, a substance composed of the chemical elements hydrogen and oxygen and existing in gaseous, liquid, and solid states. It is one of the most plentiful and essential of compounds. A tasteless and odourless liquid at room temperature, it has the important ability to dissolve many other substances.

b. Vinegar is essentially a dilute solution of acetic (ethanoic) acid in water. Acetic acid is produced by the oxidation of ethanol by acetic acid bacteria, and, in most countries, commercial production involves a double fermentation where the ethanol is produced by the fermentation of sugars by yeast.

c. Salt water is full of sodium chloride molecules.

 Salt is NOT made of NaCl molecules. Salt is made of a three dimensional checkerboard of

oppositely charged atoms of sodium and chlorine. A salt crystal is like a single gigantic

molecule of ClNaClNaClNaClNaClNa. When salt dissolves, it turns into independent atoms.

 Salt water is not full of "sodium chloride." Instead it is full of sodium and chlorine. The atoms

are not poisonous and reactive like sodium metal and chlorine gas because they are

electrically charged atoms called "ions." The sodium atoms are missing their outer electron.

Because of this, the remaining electrons behave as a filled electronic shell, so they cannot

easily react and form chemical bonds with other atoms except by electrical attraction. The

chlorine has one extra electron and its outer electron shell is complete, so like sodium it too

cannot bond with other atoms. These oppositely charged atoms can attract each other and

form a salt crystal, but when that crystal dissolves in water, the electrified atoms are pulled

away from each other as the water molecules surround them, and they float through the water

separately.