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Chapter 1: Problem 95

Which one of the following is a compound: ozone, 18 -karat gold (made by melting gold and other metals together), \(\mathrm{NaCl}\), liquid nitrogen, iced tea?

Short Answer

Expert verified
The compound among the given options is \(\mathrm{NaCl}\) (sodium chloride), as it is formed by the chemical bonding of two different elements, sodium and chlorine, in a 1:1 ratio. The other options are not compounds, as they consist of only one element or are mixtures without chemical bonding.

Step by step solution

01

Analyze ozone

Ozone is a molecule made up of three oxygen atoms bonded together, represented by the chemical formula \(\mathrm{O_3}\). This means ozone consists of only one element, oxygen, even though it has multiple atoms of the same element joined together. Therefore, ozone is not a compound but instead is a type of molecule called an allotrope (different forms of the same element).
02

Analyze 18-karat gold

18-karat gold is made by melting gold and other metals together, such as silver and copper, to create an alloy. In an alloy, the individual atoms of the different metals mix together, but they do not form chemical bonds. Therefore, 18-karat gold is not a compound but a type of mixture called an alloy.
03

Analyze \(\mathrm{NaCl}\)

\(\mathrm{NaCl}\), known as sodium chloride, is a compound formed by the combination of two elements, sodium (Na) and chlorine (Cl). These elements form a chemical bond in a 1:1 ratio, resulting in a new substance with unique properties compared to its constituent elements. Therefore, \(\mathrm{NaCl}\) is a compound.
04

Analyze liquid nitrogen

Liquid nitrogen is a substance composed of nitrogen molecules (\(\mathrm{N_2}\)) in the liquid state. Nitrogen molecules consist of two nitrogen atoms bonded together. Since liquid nitrogen only consists of one element, nitrogen, it is not a compound. Liquid nitrogen is considered a diatomic molecule (a molecule consisting of two atoms of the same element) in the liquid state.
05

Analyze iced tea

Iced tea is a mixture of various substances, including water, tea, sugar, and possibly other ingredients, such as flavorings or additives. These individual components do not form chemical bonds with each other, and therefore iced tea is not a compound but a type of mixture.
06

Conclusion

Among the given options, only \(\mathrm{NaCl}\) (sodium chloride) is a compound, as it is formed by the chemical bonding of two different elements, sodium and chlorine, in a 1:1 ratio. The other options (ozone, 18-karat gold, liquid nitrogen, and iced tea) are not compounds, as they either consist of only one element (in different forms) or are mixtures of various substances without chemical bonding.

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Most popular questions from this chapter

The air you breathe is made up mostly of nitrogen gas, \(\mathrm{N}_{2}\). (a) What can you say about the smallest possible piece of nitrogen gas? (b) Is nitrogen gas a compound? Explain.

Give an example (not from this book) of a piece of scientific information and cite both a positive and a negative result of its technological application.

True or false? After being heated to above its boiling point, ethanol is no longer ethanol but something else. Explain.

Which of the following are elemental substances and which are compounds: chlorine, \(\mathrm{Cl}_{2}\); octane, \(\mathrm{C}_{8} \mathrm{H}_{18} ;\) sulfur, \(\mathrm{S}_{8} ;\) neon, Ne?

Nitrogen, \(\mathrm{N}_{2}\), combines with hydrogen, \(\mathrm{H}_{2}\), to give ammonia, \(\mathrm{NH}_{3}\). Nitrogen and hydrogen are odorless gases that are not very soluble in water. Ammonia is also a gas, but it has an extremely powerful odor and is very soluble in water. How can you explain this great difference in properties?
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