When a liquid changes into a solid, it is called solidification. When a gas changes into a solid, it is called deposition . When a liquid changes into gas, it is called evaporation. Phase changes are usually caused by changes in temperature or pressure.
Q. What will happen if the wax is heated for a long time?
When we heat wax, it melts. The state of wax is solid before melting, which on heating converts to liquid wax.
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Q. What happened to solid wax after heating?
Item AM035004: When a piece of solid wax is heated, it becomes a liquid and the wax molecules become more loosely connected to each other. A piece of solid wax is placed in a pan and heated on a stove. After a while, the solid wax becomes a liquid. The wax molecules change into water molecules.
Q. Why is ammonia not an acid?
Ammonia is a weak base because its nitrogen atom has an electron pair that readily accepts a proton. Also, when dissolved in water, ammonia acquires hydrogen ions from water to produce hydroxide and ammonium ions. It is the production of these hydroxide ions that imparts ammonia its characteristic basicity.
Q. Why Ammonia is more basic than water?
We can use the same set of ideas to explain the difference in basicity between water and ammonia. By looking at the pKavalues for the appropriate conjugate acids, we know that ammonia is more basic than water. Oxygen, as the more electronegative element, holds more tightly to its lone pair than the nitrogen.
Q. Is ammonia a weaker base than water?
basic nature depends on ability to donate electrons. the more the ability to donate , better the base it is. oxygen is more electronegative than nitrogen and hence would be less inclined to donate its electrons. Hence ammonia is stronger base than water.
Q. Is ammonia a better Lewis base than water?
1 Answer. When it comes to comparing ammonia and water, the acidity or basicity can be explained because of the central atoms electronegativity. So based off of these values we can see that nitrogen is less electronegative, it less strongly it holds onto its electrons, and thus it is a better electron donor.
Q. Why is Phenylamine a weak base?
Phenylamine has the structure: The lone pair on the nitrogen touches the delocalised ring electrons . . . . . . and becomes delocalised with them: Taken together – the lack of intense charge around the nitrogen, and the need to break some delocalisation – this means that phenylamine is a very weak base indeed.
