While all of these forces operate, hydrogen bonding is the most significant intermolecular force that operates. Consider the boiling points of NH3 , and HF ; −33 ∘C , and 19.5 ∘C , and boiling point is probably the best indicator of intermolecular force.
What type of intermolecular forces exist between NH3 and H2S?
Intermolecular Forces
| Question | Answer |
|---|---|
| Which of the following, H2S, PH3, NH3, or SiH4, should have the lowest boiling point? | SiH4 |
| C12H26 molecules are held together by what intermolecular force? | London dispersion |
Which states can matter flow?
In a liquid, the particles are more loosely packed than in a solid and are able to flow around each other, giving the liquid an indefinite shape. Therefore, the liquid will conform to the shape of its container.
Does Bose Einstein condensate have a definite shape?
They atoms in a liquid slide past each other. They have no definite shape but they have a definite volume. They are, BEC(Bose-Einstein Condensate), Solid, Liquid, Gas, and Plasma.
What are the properties of Bose Einstein condensate?
The most obvious property of a BEC is that a large fraction of its particles occupy the same, namely the lowest, energy state. In atomic condensates this can be confirmed by measuring the velocity distribution of the atoms in the gas.
How is BEC class 9 formed?
A BEC is formed by cooling a gas of extremely low density (about one-hundred-thousandth (1/100,000) the density of normal air) to ultra-low temperatures.
What is BEC in Chemistry for Class 9?
BEC stands for Bose-Einstein Condensate which is defined as the state of matter of a dilute gas of bosons that is cooled to temperatures very close to absolute zero. Bose-Einstein condensate refers to the breakdown of atoms into a single quantum state.