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The cohesive forces between molecules of mercury are much stronger than those between molecules of water Which substance has the greatest surface tension?
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∙ 15y ago
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The stronger the intermolecular forces in a substance?
The stronger the forces the stronger the attraction between the molecules in the substance. This will tend to increase the temperature of phase changes, melting and boiling points.
Why do the melting and boiling points of a particular subsatnce vary?
It is because the intermolecular forces(the attractive forces between the molecules of a substance) differ from one substance to another. The chemical with the stronger intermolecular forces will have higher melting and boiling points, and vice versa. This is because more energy is required to separate the molecules to melt or boil the substance, if the forces are strong. The factors that determine the size of these forces are :the type of bonding in the molcules, andthe mass of the molecules.
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.
How do intermolecular forces affect the boiling of a liquid?
The stronger the forces, the more heat that must be added to boil the liquid
What does a high melting point temperature indicate about a substance?
Strong Intermolecular Forces attract the molecules
Why does water drop spread on glass surface while mercury does not?
Water has stronger adhesive forces than adhesive forses. Mercury on the other hand has stronger cohesive forces than adhesive. cohesive forces hold molecules of the same substance together , vice-versa for adhesive forces
The stronger the intermolecular forces in a substance?
The stronger the forces the stronger the attraction between the molecules in the substance. This will tend to increase the temperature of phase changes, melting and boiling points.
Does a substance having strong cohesive forces form a convex meniscus and why?
A convex meniscus does indicate strong cohesion, and at least stronger cohesion than adhesion. This is because of physics. A cohesive substance naturally attempts to form a sphere. That's the easiest way to think about I suppose. The substance tries to move closer to move of the substance as best it can.
Does water have strong cohesive properties?
In terms of causing different molecules to stick together (like glue holding pieces of paper together), water is relatively weak. However, in terms of water molecules holding tight to other water molecules, they are very strong because they have particularly powerful intermolecular forces (called hydrogen bonds) that keep the molecules together.
Why is AlBr3 soluble in water?
For any soluble substance, the ions of that substance have a stronger attraction for water molecules than they do for each other.
Do honey molecules interact more stronger than water molecules?
No, honey molecules do not interact more strongly than water molecules. Honey is a syrupy liquid that is composed mostly of water molecules, along with other compounds such as sugars. The intermolecular forces between water molecules, such as hydrogen bonding, are generally stronger than the forces between honey molecules, making water more cohesive and having a higher surface tension than honey.
Differences between gas liquid and solids?
gas-energetic molecules that randomly move, free from meach other liquid- cohesive force stronger than gas, can move, but cannot separate from the rest of the molecules solid- molecules held firmly in place, particles can only vibrate in place
Why does a meniscus create a curved line in a cylinder?
There are two principles you need to understand here called adhesion and cohesion. Adhesion is how much a substance sticks to another substance; cohesion is how much a substance sticks to itself. Water's adhesive forces are stronger than its cohesive forces which cause it to stick to the walls of a container to create an downward meniscus.
What kind of energy will be stored in the arrow when it is fired?
The arrow has combustible material coated on certainrestrictedarea of the arrow. This materials in coated form has highest potentialenergydue to stronger cohesive forces. when thismaterialswith stronger cohesive forces catch fire the molecules or the particles of the coatedmaterialgain higherkineticenergyby weakening cohesive forces. thekineticenergyof the particles faces resistanceand thus the kineticenergyis noted as frictional forcesbecausethe flame which withhigherkineticenergymoves forward faces resistance and flame may not go to more and more distance from the arrow area. Thus the cohesive and frictional forces do operate in flame movement or it could be termed as Friccohesity is highly operative factor for converting potentialenergyinto the kineticenergyof thematerialsin flame phenomenon.
Do polar compounds have stronger or weaker attractions between molecules?
Polar compounds have stronger attractions between molecules.
Why do the melting and boiling points of a particular subsatnce vary?
It is because the intermolecular forces(the attractive forces between the molecules of a substance) differ from one substance to another. The chemical with the stronger intermolecular forces will have higher melting and boiling points, and vice versa. This is because more energy is required to separate the molecules to melt or boil the substance, if the forces are strong. The factors that determine the size of these forces are :the type of bonding in the molcules, andthe mass of the molecules.
Would a large body of water molecules have a stronger attraction to fewer molecules?
A large body of water molecules would typically not have a stronger attraction to fewer molecules. It would however attempt to pull smaller molecules toward it.
