Explain using the kinetic theory why the molecules of bromine spread in the container
Answers
Answer:
The air is first liquified by subjecting it very low temperature and very high pressure, then the air undergoes fractional distillation. the elements are seperated due to their different boiling points. (O₂being one of them)
A small amount of liquid bromine is added to a container which is then sealed. Use the ideas of the Kinetic Theory to explain why,after a while, the bromine molecules have spread uniformly to occupy the whole container.
Firstly, the high energy molecules escape from the surface of the bromine, this is due to bromine's high volativity (which is due to its weak intermolecular forces). Then due to brownian motion (the random motion of microscopic particles) there is a net movement of bromine molecules from the region of high concentration (the area above the liquid bromine) spreading out into an area of low concentration. (the rest of the container)
State the difference in chemical properties of metals and non-metals.
a.) Metals:
- Form positive ions (cations)and are electropositive
- Donate electrons easily
- Form basic oxides
- Good reducing agents
b.) Non-metals
-Form negative ions (anions) and are electronegative
- Gain electrons easily
- Form acidic oxides
- Good oxidising
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Answer:
Explanation:
Bromine gas is heavier than air due to its atomic weight. It still floats in the air due to diffusion and collision between the particles of bromine and air molecules. The air and bromine particles collide so the can completely mix