A physical change is a change to a sample of matter in which some properties of the material change, but the identity of the matter does not. Physical changes can further be classified as reversible or irreversible. The melted ice cube may be refrozen, so melting is a reversible physical change.
Vapor pressure is the pressure which is exerted by the vapors of a liquid in equilibrium with the liquid. Vapor pressure depends on the boiling point; lower the boiling point higher will be the vapor pressure.
Based on the given compounds:
rubbing alcohol is polar and has the strongest intermolecular force of attraction followed by relatively polar ether and finally the non-polar propane.
The increasing order of boiling point will be:
propane < diethyl ether < rubbing alcohol
Thus, the increasing order of vapor pressure will be:
rubbing alcohol < diethyl ether < propane
Ans : F
The answer to this question is HBr
Answer:
Atomic emission spectra are produced when excited electrons return to the ground state.
Explanation:
Answer:
Yes
Explanation:
A reaction normally takes place between metals and non metals. The metals acts as the electron donors and the non metals acts as the electron acceptors. This exchange of electrons form bonds such as ionic or covalent.
A good example of a reaction between a metal and non metal is Sodium metal and Chlorine(non metal). They form an ionic bond and the product is Sodium chloride.
