Yes it is reversible (physical) called melting or dissolving
Yes it is reversible and the process is called condensation!
A reversible process is one that can be undone with no change in entropy of the system and surroundings. A cyclic process is one that starts and ends at the same state, with the system going through a series of state changes. All reversible processes are cyclic, but not all cyclic processes are reversible.
crystals are hard and shiny while coal is black and soft
When gypsum is heated at 373 Kelvin, it will lose its water of crystallization and transform into calcium sulfate hemihydrate, also known as plaster of Paris. This process is reversible if the plaster of Paris is mixed with water again, it will rehydrate to gypsum.
Yes, evaporation is the changing of matter from a liquid to a gas. You can reverse this process through condensation which is the change from a gas to a liquid.
This is a reversible process.
The process of minerals formation from magma is called crystallization. During this process, minerals solidify and form crystals as the magma cools and hardens.
No, an isothermal process is not necessarily internally reversible.
Evaporation is a reversible process.
A Bunsen burner is an object: it is not a process of any kind.
Yes it is reversible and the process is called condensation!
A reversible process is one that can be undone with no change in entropy of the system and surroundings. A cyclic process is one that starts and ends at the same state, with the system going through a series of state changes. All reversible processes are cyclic, but not all cyclic processes are reversible.
Yes, the entropy of the universe increases when a system undergoes a reversible process.
A reversible process is one in which entropy doesn't increase. In other words, it should be possible to go through the process, and then to reverse the process (go through the process in reverse order), without using any energy.Note that this is an idealization; in general, REAL processes may approach a reversible process, but usually they won't be 100% reversible - some energy is wasted when going "back and forth".
crystals are hard and shiny while coal is black and soft
Very simple The Reversible Process: That type of process that work cycle, it mean to complete revolution and come back to the initial point from where it start. Example are Carnot Cycle. Two and Four stroke engine. Irreversible Process: Opposite to reversible process called irreversible process. Example are Electricity
Yes, lots.