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When a solid melts or changes to a liquid. When a liquid boils or changes to a gas. or the reverse when a gas condenses to a liquid or a liquid freezes to a solid. Also it is possible for a solid to go directly to a gas without passing through the liquid stage. This is called sublimation and can occur with sulfur when heated, or ice in the winter when the sun shines on it..
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Are phase changes physical or chemical in nature?
A phase change is a physical change. It is not a chemical change.
Which changes occur during evaporation?
Physical changes
What phase does condensation and shortening of chromosomes occur?
prophase
What causes phase change's to occur?
Usually heat.
What changes occur when a candle lit?
it changes from a solid to a gas. the colour changes.
How does sublimation compare with other changes of state?
Sublimation occur directly from a solid to a gas, jumping over the liquid phase.
In a refrigerator which two phase changes must occur in order to keep the food cold?
Gas to liquid, liquid to vapor
Why is the period of the embryo regarded as the most dramatic prenatal phase?
It is considered as the most dramatic prenatal phase as lots of changes occur in this stage and it is also the most hazardous of the three prenatal stages because most miscarriages occur at this time
Why phase changes are reversible'?
Phase changes are accompanied with optical contrast and therefore the feasibility of phase.
What type of change occur when water changes from a solid to a liquid?
its a phase change
What phase occur after s phase?
G2
What are phase changes?
its physical changes
What are the phase changes of matter?
The melting phase changes are Solid~Liquid~Gas and the freezing phase changes are Gas~Liquid~Solid
Phase changes are examples of what changes?
Puberty
What phase does the lunar eclipse occur?
full moon phase
What does a liquid become when you cool it and it changes phase?
When you cool a liquid and it changes phase, it becomes a solid.
What are changes in phase physical changes?
Because it changes its form.
