Identify each solid as molecular, ionic, or atomic. a. Ar(s) b. H 2 O(s) c. K 2 O(s) d. Fe(s)

Hey everyone, we're asked to match the solids. PVC, nickel, calcium, sulfate, sucrose and diamond to their correct classifications. First, let's go ahead and write out our descriptions for each of these solids. So we know that PVC is a polyvinyl chloride. So we know that PVC stands for polyvinyl chloride and this is going to be a polymer. So looking at our answer choices, this would be an amorphous solid. So four is going to be PVC. Now let's go ahead and describe nickel. Now we know that nickel is a metallic solid. So this matches our answer choice too. Next looking at our calcium sulfate, we know that this is made up of ions which are our calcium with a plus two charge and are sulfate. Wouldn't when we know that this is made up of ions which is going to be our calcium with a plus two charge plus our sulfate, which is one of our poly atomic ions. So this is going to be an ionic solid which matches answer choice five. Now let's go ahead and look at Sue Gross for sucrose, we know that this is table sugar and this is held by inner molecular forces. So this matches answer choice one being a molecular solid. And lastly looking at our diamond, we know that this has a Covalin network of carbons. So this matches answer choice three, which states covalin network solid. And these are going to be our final answers for this question. Now I hope that made sense. And let us know if you have any questions

Ch.12 - Solids and Modern Material

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Tro 4th Edition

Ch.12 - Solids and Modern Material

Problem 39

Chapter 12, Problem 39

Identify each solid as molecular, ionic, or atomic. a. Ar(s) b. H₂O(s) c. K₂O(s) d. Fe(s)

Verified step by step guidance

Step 1: Understand the types of solids. Molecular solids are composed of molecules held together by intermolecular forces. Ionic solids consist of ions held together by ionic bonds. Atomic solids are composed of atoms held together by covalent bonds or metallic bonds.

Step 2: Analyze Ar(s). Argon is a noble gas, and in its solid form, it is composed of individual argon atoms held together by weak London dispersion forces, classifying it as an atomic solid.

Step 3: Analyze H2O(s). Solid water, or ice, is composed of water molecules held together by hydrogen bonds, classifying it as a molecular solid.

Step 4: Analyze K2O(s). Potassium oxide is composed of potassium ions (K+) and oxide ions (O2-) held together by ionic bonds, classifying it as an ionic solid.

Step 5: Analyze Fe(s). Iron is a metal, and in its solid form, it is composed of iron atoms held together by metallic bonds, classifying it as an atomic solid.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Molecular Solids

Molecular solids are composed of molecules held together by intermolecular forces such as hydrogen bonds, dipole-dipole interactions, or London dispersion forces. These solids typically have lower melting points compared to ionic or atomic solids. An example is water (H2O), which forms a solid (ice) at low temperatures due to hydrogen bonding between molecules.

Ionic Solids

Ionic solids consist of positively and negatively charged ions held together by strong electrostatic forces known as ionic bonds. These solids generally have high melting points and are often soluble in water. Potassium oxide (K2O) is an example of an ionic solid, where potassium and oxide ions form a stable lattice structure.

Atomic Solids

Atomic solids are composed of atoms held together by covalent bonds or metallic bonds. These solids can exhibit varying properties based on the type of bonding; for instance, metals like iron (Fe) have metallic bonding, which allows for conductivity and malleability. Atomic solids typically have high melting points and are characterized by their strong bonding.