when fireworks go off, the energy released show a chemical reaction. gasses such as carbon dioxide and particles of smoke go up in the air.
A phase change is an example of a physical change, not a chemical, nuclear, or covalent change. During a phase change, the substance undergoes a change in state (solid, liquid, gas) without any change in its chemical composition.
it is a chemical change
Crushing charcoal into powder is a physical change, as it alters the size and shape of the charcoal without changing its chemical composition.
Chemical broooooooooooooooo niga
Physical - there are no chemicals involved
It is a nuclear change because there is a change in the nuclear structure of Uranium.
Physical Change. =KDML= ;)
A phase change is an example of a physical change, not a chemical, nuclear, or covalent change. During a phase change, the substance undergoes a change in state (solid, liquid, gas) without any change in its chemical composition.
In nuclear reactions the atom itself changes while molecules and/or structural organisation of atoms do in chemical and physical changes.
The decay of radium to lead is a nuclear change, not a chemical or physical change. It involves the transformation of radium atoms into lead atoms through the process of radioactive decay. This change is due to the emission of alpha particles and does not involve any chemical reactions or changes in the physical state of the substances.
No, it is a chemical change. ---------------------------------- Yes, it is a physical change because this change not involve a chemical reaction but a nuclear reaction followed by a change in the number of protons and neutrons.
Evaporating seawater is a physical change. Physical changes affect the form, but not the chemical makeup of a substance. The sea water is undergoing a change in states of matter, not a chemical reaction. You can undo the change by condensing the evaporated water .
physical
A physical change
Nuclear fission is a physical change because it involves the splitting of atomic nuclei to release energy, without altering the chemical composition of the atoms involved. In contrast, chemical changes involve the rearrangement of atoms to form new substances with different chemical properties.
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.
Physical change: Water freezing into ice Chemical change: Water being broken down into hydrogen and hydroxide ions after the addition of a pure metal.