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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.
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 is always a chemical change. Melting is a physical change.
Burning of sulfur (or anything else) is a chemical change, not a physical change.
Sure, change from solid to liquid is a physical change
Chocolate syrup being a thick liquid is a physical change, as the state of matter is altered but the chemical composition remains the same. If the chocolate syrup were to change in composition, for example by caramelizing or burning, it would be considered a chemical change.