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Is giving off light a physical or chemical change?
I would think it to be a Physical Change. Not chemical.
Is production of heat or light physical or chemical change?
i think it would be physical because it is still energy.
Is baking bread physical or chemical change?
Classify it as chemical, the heat is used mainly to speed up the reaction.
Is a bomb exploding a physical change?
An atomic bomb uses fission-- the splitting of atoms. It is purely a physical change, at first. Any gases produced in the air surrounding the explosion (which occurs before it touches the ground), along with the intense heat produced, causes chemical changes in the air.
Is making salt by mixing sodium and chlorine together a physical or chemical change?
It is a physical change because the reaction can easily be reversed and no heat is involved.
What matter is heat conductivity chemical or physical change?
Heat conductivity is a physical property of matter, not a chemical change. It refers to the ability of a material to conduct heat through its structure without changing its chemical composition. Materials with high thermal conductivity can transfer heat more efficiently than those with low thermal conductivity.
Is conductivity a physical property or a chemical property?
Conductivity is a physical property because it pertains to the ability of a substance to conduct electricity or heat. It is related to the arrangement of particles in a material rather than its chemical composition.
Is ability to conduct heat a chemical or physical property?
yes
Is thermal conductivity physical or chemical property?
Thermal conductivity is a Physical property
Is a toast a chemical or physical change?
Chemical
Iron is a good conductor of heat and electricity is this a chemical property?
It is NOT a chemical property. On both counts it is a PHYSICAL property.
When a liquid is expanded by heat is that a chemical of physical change?
It is a physical change because the chemical composition of the substance does not change.
Is production of heat or light a physical or chemical change?
Its a chemical change hottie
Is good conductor of a heat a physical or chemical change?
Physical
Is melting wax a physical chemical or nuclear change?
This is a physical change, not a chemical change! It is because all the wax is still all there as for if it was a chemical change it would be all gone!Physical. Its physical state changed from solid to liquid. It's chemical make up remains the same.Melting wax is a chemical change because a new substance is forming. Trust me im intelligent and we just learned this in science.physical change :)It is a chemical change because it gives off heat even when it is burning. heat is one of the signs that tell whether it is physical or chemical change. The signs are heat , light's ,gas,discolor.Melting was would be a physical change-- no chemical reaction occurs when something melts or boils. A burning candle is a chemical change, both can occur at the same time.
Is giving off light a physical or chemical change?
I would think it to be a Physical Change. Not chemical.
Is body heat a chemical or physical change?
Neither. Body heat is a result of chemical changes, but it's not itself a chemical change.
