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Chapter 3: Q. 3.72 (page 92)

Classify each of the following as an element, a compound, or a mixture; 3.1

a. neon gas in lights

b. a salad dressing of on and vinegar

c. sodium hypochlorite (NaCIO) in bleach

Short Answer

Expert verified
There is one sort of atom in an isotope. A compound is comprised of two or more unique atoms that are linked together. A mixture is made up of two or more separate components that are only bonded structurally, not biologically.

Step by step solution

01

Given information (a)

The isotope halogen is a whitish, inert gas under ideal circumstances. Noon is an item since it is comprised of a ground electronic state. It is a wholly odourless gas, which means it will not form partnerships with other ions or things.

02

Explanation (a)

(a) Neon gas in lights is a pure substance. It consists of only one type of material i.e., neon. Hence, it is an element.

03

Given information (b)

The parts are agitated together, but not covalently combined in the cocktail. Salad is a beautiful illustration of a combo. Tomatoes, lettuce, cucumbers and ranch dressing are all in one plate.

04

Explanation (b)

(b) A salad dressing of oil and vinegar is a mixture because it consists of different compounds which are chemically not combined.

05

Given information (c)

If we're talking about sheer disinfectant white, the answer is obvious; disinfectant is a combination. After all, pure deionized water is made up of interconnected elements. There is no need for overhead or compound terms.

06

Explanation (c)

(c) Sodium hypochlorite in bleach is a compound with chemical formula, (NaCIO). It is a pure substance with fixed chemical composition. Hence, it is a compound.

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