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Chapter 1: Problem 63

Which of the following are elemental substances and which are compounds: baking soda, \(\mathrm{NaHCO}_{3}\); graphite, \(\mathrm{C} ;\) dry ice, solid \(\mathrm{CO}_{2}\); metallic sodium, Na; metallic mercury, Hg?

Short Answer

Expert verified
Baking soda, \(\mathrm{NaHCO}_{3}\), and dry ice, solid \(\mathrm{CO}_{2}\), are compounds. Graphite, \(\mathrm{C}\), metallic sodium, Na, and metallic mercury, Hg, are elemental substances.

Step by step solution

01

Determine the number of elements present in NaHCO3

In \(\mathrm{NaHCO}_{3}\), we have three different elements: \(\mathrm{Na}\) (Sodium), \(\mathrm{H}\) (Hydrogen), \(\mathrm{C}\) (Carbon), and \(\mathrm{O}\) (Oxygen).
02

Classify NaHCO3

Since \(\mathrm{NaHCO}_{3}\) consists of more than one type of atoms, it is a compound. 2. Graphite, \(\mathrm{C}\)
03

Determine the number of elements present in Graphite

Graphite is made up of only one element, \(\mathrm{C}\) (Carbon).
04

Classify Graphite

Since graphite is made up of only one type of atom, it is an elemental substance. 3. Dry ice, solid \(\mathrm{CO}_{2}\)
05

Determine the number of elements present in CO2

In solid \(\mathrm{CO}_{2}\), we have two different elements, \(\mathrm{C}\) (Carbon) and \(\mathrm{O}\) (Oxygen).
06

Classify Solid CO2

Since solid \(\mathrm{CO}_{2}\) consists of more than one type of atoms, it is a compound. 4. Metallic sodium, Na
07

Determine the number of elements present in Metallic Sodium

Metallic Sodium is composed of only one element, \(\mathrm{Na}\) (Sodium).
08

Classify Metallic Sodium

Since metallic sodium is made up of only one type of atom, it is an elemental substance. 5. Metallic mercury, Hg
09

Determine the number of elements present in Metallic Mercury

Metallic Mercury is composed of only one element, \(\mathrm{Hg}\) (Mercury).
10

Classify Metallic Mercury

Since metallic mercury is made up of only one type of atom, it is an elemental substance. In conclusion, baking soda and dry ice are compounds, while graphite, metallic sodium, and metallic mercury are elemental substances.

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