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A new substance is produced.
Bubbles are given off (fizzing), which shows that a gas has been produced.
Color changes.
Turbidity (cloudiness)
heat/light given off.
A sound is produced/an explosion occurs
etc
Wiki User
∙ 12y ago
Wiki User
∙ 7y agophysical change is a change in the form of a substance without the production of a new substance.
chemical change occurs when the composition of a given substance changes so that the original substance disapears and a new substance is produced.
burning coal in a furnace
Wiki User
∙ 8y agoA chemical change can be caused by a reaction. It an element or compound reacts with another, it is known as a chemical change.
Wiki User
∙ 9y agoOne result of a chemical change is that a new material is formed.
Wiki User
∙ 12y agoburning Mg ribbon
Wiki User
∙ 12y agohkkfyhk
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Is the change of identity a physical or chemical property?
If you mean a change in chemical identity, that would be a chemical change.
Is an apple that is cut a physical or a chemical change?
It is a physical change because while the apple is cut into smaller pieces, it is still composed of the same materials. If you lit the apple on fire, that would result in a chemical change.
Why would frying an egg be a physical change instead of a chemical change?
Frying an egg is a chemical change.
Is Pungent odor a physical or chemical change?
It would be a physical change because it is not changing the chemical composition.
Is mixing milk and cream to a physical or a chemical change?
It would be a chemical change, because if it was a physical change it would stay the same substance, but in a chemical change you mix 2 different substances to get a new substance.
What is another word for chemical change?
reaction, chemical process, chemical change, chemical action
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.
Hydrochloric acid reacts with magnesium to produce hydrogen gas is chemical change?
The reaction of potassium (K) with hydrochloric acid (HCl) would result in a chemical change.2K(s) + 2HCl ==> 2KCl + H2(g). This is a chemical change because K has been converted to a new chemical, KCl, and H in HCl has been converted to H2 gas.
Is the formation of a solid a chemical change?
Yes, if it occurs as the result of a chemical reaction. For example, if two clear colorless solutions form a white precipitate (solid) when mixed, that would be an example of a chemical change. The formation of a solid from freezing is a physical change.
What peice of apparatus would you use to change chemical energy to electrical energy?
A battery uses a chemical action to produce direct current electrical energy.
A change in the rate of enzyme action in aquatic invertebrates would most directly result from a change in what?
temperature of the water
Is sand flowing through an hour glass an chemical or physical change?
It is not really a change, at all. Sand is moving from one spot to another. If it truly had to be categorized, I would put it under a physical change. A physical change would be a change in an object you can see with your eyes. However, the chemical makeup of that object does not change. In other words, no new chemical is formed. For example, water may freeze or evaporate, but the chemical makeup of water, no matter what state it is in, is H2O. A chemical change would would result in the formation of one or more new chemicals. For example, burning paper is a chemical change. You have paper and fire, and when you burn the paper up, it gives off CO2, and charred paper, which is different from regular paper.
Is an apple that is cut a physical or a chemical change?
It is a physical change because while the apple is cut into smaller pieces, it is still composed of the same materials. If you lit the apple on fire, that would result in a chemical change.
Is the change of identity a physical or chemical property?
If you mean a change in chemical identity, that would be a chemical change.
When a precipitate is formed from the mixture of two chemicals is it a physical or chemical change?
Chemical. Four good indicators of a chemical change are: # Change in Color # Change in Temperature # Creation of a gas # Creation of a precipitate These don't always indicate a chemical change, but are good guidelines if you are unsure.
Corrosion is a physical property of metals?
No, corrosion is a chemical change of the metal involved.
Is the burning of phosphorus physical or chemical change?
Burning of anything is a chemical change. Combustion (burning) is a chemical reaction; it is simply where oxygen is added to, for example, an element, and turns it into an oxide. Burning phosphorus would result in phosphorus oxide. P + O2 --> P4010
