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What is an intermolecular force?

Intermolecular forces are any forces exerted on neighboring molecules of a given compound. The forces are not the actual chemical bonds present in the substance, but rather the substances own attractiveness to its own molecules. These intermolecular forces play a crucial role in determining a compounds various physical properties such as but not limited to :solubility, melting point, boiling point, density.


Is methane a compound consisting of molecules held together by weak intermolecular forces?

Given that methane is a gas at room temperature, we can see that its molecules are attracted to each other only by weak intermolecular forces. But normally, if I say "methane is a compound consisting of..." the statement concludes, one carbon atom and four hydrogen atoms. That's what the methane molecule consists of.


Does the formation of solid-liquid solutions release or absorb heat?

The formation of solid-liquid solutions typically releases heat, as energy is usually given off when dissolving a solid in a liquid. This is because the intermolecular forces between the solute and solvent molecules are stronger than the forces holding the solute particles together, resulting in a net release of energy.


When a gas is given off as a liquid boils it is an example of a?

When a gas is given off as a liquid boils, it is an example of a phase change. As the liquid temperature increases, the kinetic energy of the molecules rises until they break free from the intermolecular forces holding them in the liquid state, thus transitioning into the gas phase.


Is solubility quantitative or qualitative?

== == They are all physical properties - they are measures of physical changes.The key property of a physical change is that no intramolecular bonds are made or broken. Intra- meaning within, refers to intramolecular forces that hold a molecule to itself. So for example, a single molecule of the salt, sodium chloride (NaCl) is held together by intramolecular bonds. A grain of salt, for example, is comprised of many molecules of NaCl. When you boil, melt or freeze many molecules of NaCl, you are only changing how each molecule interacts with one another; you are not changing the molecular composition. These interactions depend on intermolecular bonds/forces.Physical change affects only the intermolecular forces, also called Van Der Waals forces, between atoms and molecules (inter- meaning between)."Intermolecular Forces are electrostatic forces of attraction that exist between an area of negative charge on one molecule and an area of positive charge on a second molecule." From strongest to weakest, these are: hydrogen bonding > dipole interactions> London Dispersion Forces.

Related Questions

What is an intermolecular force?

Intermolecular forces are any forces exerted on neighboring molecules of a given compound. The forces are not the actual chemical bonds present in the substance, but rather the substances own attractiveness to its own molecules. These intermolecular forces play a crucial role in determining a compounds various physical properties such as but not limited to :solubility, melting point, boiling point, density.


What is an Inter molecular force?

Intermolecular forces are any forces exerted on neighboring molecules of a given compound. The forces are not the actual chemical bonds present in the substance, but rather the substances own attractiveness to its own molecules. These intermolecular forces play a crucial role in determining a compounds various physical properties such as but not limited to :solubility, melting point, boiling point, density.


How does intermolecular forces of a substance determine the phase the substance is in?

The strength of the intermolecular forces will determine what phase the substance is in at any given temperature and pressure. Consider the halogens for example, fluorine and chlorine are gases, while bromine is a liquid and iodine is a solid at room temperature. When considering the intermolecular forces present, each of these substances only has London forces, which increase in magnitude with increasing size of the molecules, and size increases as you go down a group in the periodic table. So, fluorine has the smallest intermolecular forces, and iodine has the largest. This explains why these different substances exist in different phases when at room temperature and pressure. The molecules in fluorine, for example, are only slightly attracted to each other, and therefore the substance exists as a gas. The stronger intermolecular forces in bromine, however, hold the molecules close to each other, but not quite strongly enough to prevent the molecules from sliding past each other; this makes bromine a liquid. Finally, in iodine, the intermolecular forces are actually strong enough that the molecules are held in fixed positions relative to each other, thus making iodine a solid.


Why cl2 is gass and br2 liquid and I2 solid?

NaCl is ionically bonded with stong electrostatic attractions whereas Cl2 only has weak Van Der Waals' forces acting between the molecules More strength is needed to break NaCl's bonds than CL2's bonds. Therefore, NaCl is solid and Cl2 is a gas Hope this helps :)


The tendency of the molecules of a liquid at a given tepmpature to evaporate as a result of radom molecular motion?

This is known as vapor pressure. It is influenced by factors like temperature, intermolecular forces, and surface area. Higher temperature and weaker intermolecular forces increase the vapor pressure of a liquid.


How do intermolecular force affects whether a substance is a solid at room temperature?

The stronger the intermolecular attractions are between two molecules, the more likely they are to stay together at a any given temperature.


Is methane a compound consisting of molecules held together by weak intermolecular forces?

Given that methane is a gas at room temperature, we can see that its molecules are attracted to each other only by weak intermolecular forces. But normally, if I say "methane is a compound consisting of..." the statement concludes, one carbon atom and four hydrogen atoms. That's what the methane molecule consists of.


What molecule has the highest vapor pressure Br2 H2O NCl3?

Among the given molecules, bromine (Br2) has the highest vapor pressure due to its relatively low boiling point and weak intermolecular forces between its molecules. Water (H2O) has a lower vapor pressure compared to bromine because of its stronger hydrogen bonding. Nitrogen trichloride (NCl3) has the lowest vapor pressure since it is a polar molecule with stronger intermolecular forces compared to the other two molecules.


What is intermolecular forces in Ar?

Intermolecular forces in argon involve London dispersion forces, which are weak attractive forces caused by temporary fluctuations in electron distribution. These forces are the primary intermolecular force in noble gases like argon, given their lack of permanent dipoles.


What is the intermolecular forces of GeBr4 and TeCl2?

GeBr4 experiences London dispersion forces, which are the weakest intermolecular forces, due to its nonpolar covalent bonds. TeCl2 exhibits both London dispersion forces and dipole-dipole interactions, given that it contains polar covalent bonds due to the electronegativity difference between tellurium and chlorine.


Process of vaporization require an input of energy?

Yes, the process of vaporization does require an input of energy. The energy is required to break the intermolecular forces of a given substance. The intermolecular forces is usually very strong.


When heated how does liquid change?

when the liquid is heated the molecules are given kinetic energy, this causes them to move faster. As the molecules move faster they collide and the cohesive (intermolecular forces/hydrogen bonds) forces break down. this means they are free to move more and their density decreases until they change state and become a gas.