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Wax will melt and is converted from solid to liquid. It is a physical change.
Wax will melt and is converted from solid to liquid. It is a physical change.
Wax will melt and is converted from solid to liquid. It is a physical change.
For the wax, yes. It changes to a liquid and then back to a solid. But some of the wax is also consumed in a chemical change as it oxidizes, along with the burning wick.
Melting! A physical change would be to change something from Solid <--> Liquid <--> Gas
Burning is a chemical change.
Burning is always a chemical change. Melting is a physical change.
The burning of gasoline represents a chemical change because it involves a reaction with oxygen to produce heat, light, and new chemical compounds. On the other hand, the evaporation of gasoline represents a physical change as it involves the gasoline changing from a liquid to a gas without any change in its chemical composition.
For the wax, yes. It changes to a liquid and then back to a solid. But some of the wax is also consumed in a chemical change as it oxidizes, along with the burning wick.
Burning of sulfur (or anything else) is a chemical change, not a physical change.
Sure, change from solid to liquid is a physical change
Burning is a chemical change.