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Are substances with weak intermolecular interactions likely to be liquids at higher or lower temperatures?
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Why can't liquids change volume but gasses can?
The intermolecular strength is higher in liquids than in gases.
Why might a mixture be separated?
A denser liquid will sink to the bottom while a less denser liquid will float. Also, liquids composed of polar molecules such a water will not form chemical bonds with nonpolar molecules.
Which substance probably has the higher boiling point compound which is strongly polar or compound which is nonpolar?
Strongly polar. It's all about the intermolecular forces. A polar molecule is polar because of the electronegativity differences between the atoms. It results in something called hydrogen bonding, which is extremely powerful. It takes more energy to break stronger bonds...that's why you need hotter temperatures in order to melt polar substances. Nonpolar substances have an electronegativity difference of 0. The only thing holding those substances together are London dispersion forces, which is a random force and the weakest of all the intermolecular forces. It's easier to break these bonds, that's why they have lower boiling points.
Are solids gases and liquids substances?
Yes, all are substances.
What physical properties of liquid that make them stick in a container?
The intermolecular forces in liquids are not so strong as in solids and liquids take the form of the container.
Why are liquids and gas's not stable?
because of intermolecular interactions and also possible of polarizing effect
Which intermolecular force is present is present in solids and liquids that are composed of non polar molecules?
London dispersion forces (instananeous dipole - induced dipole interactions)
Unlike other kinds of liquids volatile liguids?
Unlike other kinds of liquid, volatile liquids vaporize easily. Generally, liquids that evaporate at room temperature or lower are considered volatile liquids.
Why can't liquids change volume but gasses can?
The intermolecular strength is higher in liquids than in gases.
A description of gases and liquids are?
Gases have neither a definite shape nor a definite volume. Liquids do not have a definite shape, but they DO have a definite volume. Gases have no or little intermolecular forces holding them together, whereas liquids do have substantial intermolecular forces.
Why are liquids usually less dense than a solid of the same substance?
The intermolecular forces are weaker in liquids.
Why might a mixture be separated?
A denser liquid will sink to the bottom while a less denser liquid will float. Also, liquids composed of polar molecules such a water will not form chemical bonds with nonpolar molecules.
Why are some substances gases and others liquids at room temperature?
It depends on the substance's boiling and freezing temperatures. For example, water's boiling point is 100°C, so at a temperature (e.g. 45°C) it is a liquid. But if the temperature is for example -3°C, then water is a solid since the freezing point of water is 0°C.
Liquids have a definite volume but no definite shape?
This is because of intermolecular attraction.
Why liquids have a definite volume but no shape?
The intermolecular forces are not sufficiently strong.
Which substance probably has the higher boiling point compound which is strongly polar or compound which is nonpolar?
Strongly polar. It's all about the intermolecular forces. A polar molecule is polar because of the electronegativity differences between the atoms. It results in something called hydrogen bonding, which is extremely powerful. It takes more energy to break stronger bonds...that's why you need hotter temperatures in order to melt polar substances. Nonpolar substances have an electronegativity difference of 0. The only thing holding those substances together are London dispersion forces, which is a random force and the weakest of all the intermolecular forces. It's easier to break these bonds, that's why they have lower boiling points.
What type of intermolecular forces occur in highly volatile liquids?
London Dispersion
