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True or false The candle wax has undergone a chemical change?
False because the wax would have gone through a physical change since it has only melted and turned into liquid but you can reverse the effect by cooling it so it becomes a solid again. (No new substance formed) When the string is burned by the fire, the change is irreversible. Also, when the string is burned, new substances are created like gases and ash making it a chemical change. Since no new substance forms when the candle wax melts, that's why it is a physical change, not a chemical change.
As liquid water changes to a gas does it become a new compound?
No, liquid water changing to a gas (water vapor) does not involve a change in chemical composition, so it does not become a new compound. It is still composed of H2O molecules, just in a different state of matter.
How do you know when something has gone through a physical change?
A physical change refers to a change in the physical state or appearance of a substance without altering its chemical composition. You can observe a physical change by noting changes in color, shape, size, texture, or state of matter (solid, liquid, gas) of the substance. Additionally, physical changes are usually reversible.
What combination changes in a chemical change?
In a chemical change, chemical bonds are broken and new bonds are formed, leading to a rearrangement of atoms into different combinations. This process results in the formation of new substances with different properties from the original substances.
Is wax melting a physical or a chemical?
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.
What is something with no chemical change?
Usually it means that something has gone through a physical change and any chemical properties of that substance are not altered.
Is an egg gone off a chemical or physical change?
chemical
Is burning of a candle is physical change?
Burning is always a chemical change. Look at it like this; if you can't put it back together like it was to begin with, it most likely has gone through a chemical change i.e. copper oxidizing, burning paper...
What chemical change is present when milk has gone sour?
because ther is carbondioxide
What food has gone through a physical change?
hi
What changes has the computer gone through since it was invented?
It has gone through physical change and size change in the shape and technology itself has been modified to hold more and be smaller.
Suger dissolved in water has gone through what process?
it been through phycical change
Is drying of fish is a chemical change?
No, drying of fish is a physical change, not a chemical change. The process of drying simply involves the removal of water from the fish, causing it to undergo a physical transformation, but its chemical composition remains the same.
True or false The candle wax has undergone a chemical change?
False because the wax would have gone through a physical change since it has only melted and turned into liquid but you can reverse the effect by cooling it so it becomes a solid again. (No new substance formed) When the string is burned by the fire, the change is irreversible. Also, when the string is burned, new substances are created like gases and ash making it a chemical change. Since no new substance forms when the candle wax melts, that's why it is a physical change, not a chemical change.
Is Leather an animal or plant product?
Leather is cow hide that has gone through a chemical process to make it leather
Is wax melting chemical or physical 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.
How show that salt has gone through a physical change?
The molecule of sodium chloride remain unchanged.
