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Chemically, nothing changes about water when it changes state. The physical state changes when water freezes into ice or evaporates into steam.
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Is mold a chemical change?
No, mold growth is a biological process that involves the decomposition of organic matter by fungi. It is not a chemical change because the molecular structure of the substances involved remains the same.
Is a physical change what happens when chemical bonds break and new bonds form?
No, a physical change does not involve breaking or forming chemical bonds. It only involves changes in physical properties like size, shape, or state of matter. Chemical changes involve the breaking and forming of chemical bonds to create new substances.
What happens to make a chemical reaction?
In A Chemical Reaction the following take place a) there is evolution of a gas b) change in colour c) change in state d) change in temperature
Is a wet handkerchief is physical or chemical change?
A wet handkerchief is a physical change. The water has only physically changed the state of the handkerchief by being absorbed, but the handkerchief itself has not undergone a chemical transformation.
What kind of change such as a change of state the substance of the whole changes but its underlying structure remains the same?
In changes in which the molecular structure of a substance remains constant, such as changes of state, we often refer to these changes as Physical Changes. If the molecular structure is altered it would be a Chemical Change.
Is evaporation a chemical reaction?
No, evaporation is a physical process in which a liquid substance changes into a gas state at a temperature below its boiling point. Unlike chemical reactions, evaporation does not involve any change in the chemical composition or structure of the substance.
Is liquid to gas chemical change?
No, the change from liquid to gas is a physical change, not a chemical change. In this process, the substance's molecular structure remains the same, only its physical state changes from liquid to gas.
What is the meaning of Physical Change What is the meaning of Chemical Change?
PHYSICAL CHANGE - refers to the change in size, shape, or state of matter. CHEMICAL CHANGE - happens when one chemical substance is transformed into one or more different substance, such as iron becomes rust.
Is a broken mirror a chemical or physical change?
A broken mirror is a physical change, not a chemical change. This is because the process of breaking a mirror alters its shape and structure but does not change its chemical composition. The glass remains glass, regardless of its fragmented state. Thus, the change is purely physical.
A chemical change differs from a physical change because in a chemical change a substance?
undergoes a chemical reaction, resulting in the formation of new substances with different chemical properties. This usually involves a rearrangement of atoms and the breaking and forming of chemical bonds, leading to a change in the composition and structure of the material. In contrast, physical changes only affect the physical state or appearance of a substance without altering its chemical composition.
What is always a characteristic of a chemical change but not always a characteristic of a physical change?
When a chemical change takes place, the chemical structure of particles involved changes (i.e. one or more new substances are formed). In a physical change, the physical state of the particles involved changes (e.g. a solid melts and becomes a liquid). The chemical structure of the particles does not change, and no new substance is formed.
Do chemical changes affect the chemical structure of a substance?
Yes, chemical changes result in a change in the chemical structure of a substance. During a chemical change, new substances with different chemical compositions are formed through the rearrangement of atoms and bonds. This is in contrast to physical changes, where the chemical structure remains the same even though the physical properties may change.
