Which of the following happens during a chemical change but does not happen during a physical change?(1 point)
Responses
Atoms of one or more substances rearrange into a new substance.
The appearance of a substance changes, but it is still the same substance.
The mass of the substance changes.
The state of the substance changes.
Atoms of one or more substances rearrange into a new substance.
what is the correct answer
The correct answer is:
Atoms of one or more substances rearrange into a new substance.
This describes a chemical change, where the actual chemical composition of the substance is altered, leading to a new substance with different properties. Physical changes, on the other hand, involve changes in appearance, state, or mass without altering the substance's chemical identity.
The correct answer is: Atoms of one or more substances rearrange into a new substance.
During a chemical change, atoms of one or more substances rearrange themselves to form new substances with different chemical properties. This means that the original substances no longer exist, and new substances are formed. Chemical reactions involve the breaking and forming of chemical bonds between atoms.
On the other hand, during a physical change, the appearance or state of a substance may change, but the chemical composition remains the same. This means that even though the physical properties of the substance may be altered, it is still made up of the same atoms and molecules.
The mass of a substance is conserved during both physical and chemical changes. This means that the total mass of all the reactants involved in a chemical reaction remains the same as the total mass of all the products formed. So, a change in mass is not exclusive to a chemical change.
Similarly, the state of a substance, such as changing from a solid to a liquid or a gas, can occur during both physical and chemical changes. Physical changes involve a change in the physical state or arrangement of the particles, while chemical changes involve a change in the chemical composition of the substance.
In summary, the main distinguishing factor between a chemical change and a physical change is the rearrangement of atoms to form new substances, which only occurs in a chemical change.