Metallic compounds range in hardness. In ionic compounds, electrons are tightly held by the ions, and the ions cannot move translationally relative to each other. Molecular substances have a broad range of physical and chemical properties.• Gases are elements such as Noble gases or diatomic nonmetals (N2 , Cl2 , H2 , O2 , F2) or small, nonpolar compounds. Ionic and Covalent compounds in Household Items By: Vichada Meier 5th Twizzlers Chemical Name: Sulfer Dioxide Formula: SO2 Chemical Name: Ferrous Sulfate also known as... Iron Sulfate = Fe (II) SO4 Chemical Name: Potassium Sorbate Formula: K6H7KO2 Table Salt Vinegar Chemical Examples. which is a property of a molecular compound? cannot be shaped without cracking/breaking), and they do … d. its melting or freezing point is below 250'C. They are very low or nonmalleable or non-ductile. Metals are malleable and ductile while ionic are brittle and hard 2. a. it is malleable. Covalent compounds are usually soft and malleable Since the interactions between covalent molecules are weak, the molecules can easily slide over each other, and move around. This means that covalent compounds are ususally soft and easily malleable. 1. As Van der Waal's forces are weak, a very small amount of energy is required to break the bond between the molecules corresponding to low melting point and boiling point. This can be attributed to their weak force of attraction between the various bonded atoms. Malleability & Ductility Metals are malleable and ductile because when pressure is applied the positive charges are shielded from each other by the sea of valence electrons so they will slide past each other without huge repulsive forces. The ionic compounds are hard and fragile, while the molecular compounds are soft and malleable. 4) Covalent compounds dissolve in organic solvents. Properties of Covalent Substances, Metals, and Ionic Compounds 2. This explains many properties of ionic solids. Smaller covalent compounds with weak bonds are frequently soft and malleable; Covalent compounds have low boiling points. There are exceptions to this e.g. b. it is soluble in water. diamond, a covalent network of carbon, which is very hard. Relevance. Answer Save. They are hard and brittle, they are not malleable or ductile (i.e. HCl, H 2 O, PCl 5 etc are example of covalent bonds. 1 Answer. Metals have a high boiling point while covalent compounds have low boiling points 4. 1 decade ago. Molecular compounds are chemical compounds including atoms bonded together by covalent chemical bonds. Properties of covalent network compounds Brittleness… Covalent network compounds not brittle because of their strong covalent bonds Malleability and ductility… Covalent network compounds are not malleable or ductile as the covalent bonds do not allow the atoms to move. Types of covalent bonds Conduct electricity in solid form. As a result the metal will get thinner and the sheet gets larger or the wire gets longer. Properties of covalent substances, metals and ionic compounds 1. Lv 7. These compounds take shape when atoms share their unpaired electrons. c. it is a good conductor when it is in a solution. science teacher. Metals have highly mobilized electrons and … A molecular compound has discrete groups of atoms joined together to form molecules Metallic Compounds -Formed from a combination of metals -"sea of electrons"; electrons can move among atoms Solids at room temperature Various melting points Do not dissolve in water. Metals can conduct electricity while covalent compounds do not conduct electricity well 3. Compounds are classified as ionic or molecular (covalent) on the basis of the bonds present in them. 3) Covalent compounds generally have low melting and boiling points. 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