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. science teacher. They are very low or nonmalleable or non-ductile. cannot be shaped without cracking/breaking), and they do … 1 decade ago. diamond, a covalent network of carbon, which is very hard. Relevance. Properties of covalent substances, metals and ionic compounds 1. which is a property of a molecular compound? a. it is malleable. Examples. 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. Compounds are classified as ionic or molecular (covalent) on the basis of the bonds present in them. Types of covalent bonds Lv 7. These compounds take shape when atoms share their unpaired electrons. The ionic compounds are hard and fragile, while the molecular compounds are soft and malleable. 4) Covalent compounds dissolve in organic solvents. In ionic compounds, electrons are tightly held by the ions, and the ions cannot move translationally relative to each other. Properties of Covalent Substances, Metals, and Ionic Compounds 2. 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. 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. Conduct electricity in solid form. This means that covalent compounds are ususally soft and easily malleable. 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 c. it is a good conductor when it is in a solution. b. it is soluble in water. There are exceptions to this e.g. 1 Answer. 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. Metals have a high boiling point while covalent compounds have low boiling points 4. 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. 3) Covalent compounds generally have low melting and boiling points. This can be attributed to their weak force of attraction between the various bonded atoms. Answer Save. Metals can conduct electricity while covalent compounds do not conduct electricity well 3. Metals are malleable and ductile while ionic are brittle and hard 2. As a result the metal will get thinner and the sheet gets larger or the wire gets longer. Metals have highly mobilized electrons and … Molecular compounds are chemical compounds including atoms bonded together by covalent chemical bonds. Smaller covalent compounds with weak bonds are frequently soft and malleable; Covalent compounds have low boiling points. d. its melting or freezing point is below 250'C. Ionic Compounds When an element composed of atoms that readily lose electrons (a metal) reacts with an element composed of atoms that readily gain electrons (a nonmetal), a transfer of electrons usually occurs, producing ions. 1. 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