Therefore, molecular compounds usually have low melting and boiling points. Covalent compounds usually have lower enthalpies of fusion and vaporization than ionic compounds. The enthalpy of fusion is the amount of energy needed, at constant pressure, to melt one mole of a solid substance.... read more ›
|covalent bond||a chemical bond formed when two atoms share electrons|
|a double bond||two pairs of electrons shared between two atoms|
|s property shared by most molecular compounds||low melting point|
|molecular compounds do not conduct electricity||because they do not break up into ions|
Properties of Compounds: They have a fixed composition. They have definite properties. They cannot be separated physically.... continue reading ›
- Melting point and boiling point. relatively low.
- heat to melt. much less heat to melt a molecular compound than an ionic compound.
- soft or hard? relatively soft.
- more or less flammable than ionic compounds? ...
- do they conduct electricity when dissolved in water? ...
- do they dissolve well in water. ...
- Low melting points and boiling points. ...
- Low enthalpies of fusion and vaporization These properties are usually one or two orders of magnitude smaller than they are for ionic compounds.
- Soft or brittle solid forms. ...
- Poor electrical and thermal conductivity.
The three main properties of a molecular substance include: low melting points, or a temperature that indicates when a solid substance changes to a liquid; and boiling points, or a temperature that indicates the point at which a liquid changes to a gas, or vapor; poor conductivity; and low solubility, which is a ...... view details ›
A molecular compound consists of molecules whose formula represents the actual number of atoms bonded together in the molecule. The atoms are joined to give a definite shape which is defined by the angles between the bonds and by the bond lengths. Some examples are shown below.... view details ›
Molecular compounds are inorganic compounds that take the form of discrete molecules. Examples include such familiar substances as water (H2O) and carbon dioxide (CO2). These compounds are very different from ionic compounds like sodium chloride (NaCl).... view details ›
Molecular compounds form with covalent bonds, which share electrons, and the mutual attraction for the shared electrons holds the molecules together. Ionic compounds, conversely, don't share electrons; they transfer them from one atom to another.... view details ›
- The covalent compounds exist as gases or liquids or soft solids.
- The melting and boiling points of covalent compounds are generally low.
- Covalent compound are insoluble in water but dissolve in organic solvents.
- They are non-conductors of electricity in solid, molten or aqueous state.
- 5.1: Isomers. One of the interesting aspects of organic chemistry is that it is three-dimensional. ...
- 5.2: Carbohydrate Structures. ...
- 5.3: Polarity and Intermolecular Forces. ...
- 5.4: Chromatography. ...
- 5.5: Properties of Compounds (Exercises)
|Property||Ionic Compounds||Molecular Compounds|
|Physical state at room temperature||Solid||Gas, liquid, or solid|
|Water solubility||Usually high||Variable|
|Melting and boiling temperatures||Generally high||Generally low|
|Electrical conductivity||Good when molten or in solution||Poor|
Compounds are defined as substances composed of two or more different elements that are chemically combined. Compounds have physical and chemical properties that help us identify them.... see details ›
a neutral group of atoms joined together by covalent bonds.... see details ›
Neutral atoms that gain electrons become anions (negatively charged ions). Which of the following elements will form a molecular compound with one another? Oxygen is the only other nonmetal listed, so it is the only combination that could yield a molecular compound.... read more ›
1 Answer. Molecule: group of two or more atoms held together by chemical bonds. So, minimum 2 atoms are required to form a molecule.... see more ›
- Simple molecular substances generally have low melting points and boiling points and are often liquids or gases at room temperature.
- Energy is transferred to a substance to melt or boil it. ...
- There are intermolecular forces between simple molecules.
All elements have properties.
Those properties include, but are not limited to, conductivity, magnetism, melting point, boiling point, color, state of matter, and others. Elements with similar properties are grouped together in different areas of the periodic table of elements.... read more ›
Because of the large number of different arrangement of atoms found in the compounds and the type of bonds holding them.... continue reading ›
Molecular compounds are chemical compounds that take the form of discrete molecules. Examples include such familiar substances as water (H2O) and carbon dioxide (CO2) (Figure 3.1. 1). These compounds are very different from ionic compounds like sodium chloride (NaCl).... see more ›
Covalent compounds are formed on the basis of sharing electrons. When the electrons are shared within the bonds, there is no electrons available to conduct electricity. Hence why covalent compounds are generally poor conductors of electricity.... continue reading ›
Molecular compounds form with covalent bonds, which share electrons, and the mutual attraction for the shared electrons holds the molecules together. Ionic compounds, conversely, don't share electrons; they transfer them from one atom to another.... continue reading ›