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Water is a common substance that undergoes both chemical and physical changes. Physical changes can include changes in state, such as melting or freezing, while chemical changes involve the formation of new substances through a chemical reaction, such as rusting or burning.
Most substances undergo both changes - if the conditions are suitable.
When water is evaporated this is a physical change; when water react with sodium this is a chemical change.
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Is reactivity a physical change?
Reactivity is a chemical property, not a physical change. It refers to the ability of a substance to undergo a chemical reaction with another substance. Physical changes involve alterations in the form or state of a substance without changing its chemical composition.
What change might be observed when a substance is heated?
When a substance is heated, it may undergo physical or chemical changes such as melting, evaporation, sublimation, or decomposition. These changes can result in alterations in the substance's physical state, color, texture, or chemical composition.
Can an object undergo both physical and chemical changes?
Yes, an object can undergo both physical and chemical changes. Physical changes involve changes in physical properties like shape, size, or state of matter without altering the composition. Chemical changes involve a transformation at the molecular level, resulting in the formation of new substances.
What describes a chemical property of a substance?
A chemical property of a substance refers to its ability to undergo a chemical change or reaction to form new substances. This property is related to the substance's composition and arrangement of atoms. Examples of chemical properties include reactivity with other substances, flammability, and acidity or basicity.
Is very reactive a physical or chemical property?
"Very reactive" is a chemical property because it describes how likely a substance is to undergo a chemical reaction with other substances. It does not pertain to any physical characteristic of the substance.
Can matter undergo changes in both its physical and its chemical properties?
Yes, matter can undergo changes in both its physical and chemical properties. Physical properties changes do not alter the composition of the substance, such as changing state from solid to liquid. Chemical properties changes involve a chemical reaction that results in the formation of new substances with different chemical compositions.
What properties refer to a substance's ability to undergo changes that alter its composition and identity?
Chemical properties refer to a substance's ability to undergo changes that alter its composition and identity. These changes often involve the breaking and forming of chemical bonds within the substance.
Is reactivity a physical change?
Reactivity is a chemical property, not a physical change. It refers to the ability of a substance to undergo a chemical reaction with another substance. Physical changes involve alterations in the form or state of a substance without changing its chemical composition.
Can silicon undergo a physical and chemical change?
Yes, silicon can undergo physical changes such as melting and crystallizing. It can also undergo chemical changes when it reacts with other elements, forming compounds like silicon dioxide (SiO2) or silicon carbide (SiC).
What change might be observed when a substance is heated?
When a substance is heated, it may undergo physical or chemical changes such as melting, evaporation, sublimation, or decomposition. These changes can result in alterations in the substance's physical state, color, texture, or chemical composition.
Is copper sulphate a physical change or chemical?
Copper sulfate dissolving in water is a physical change as no new substance is formed. However, if copper sulfate is heated to decomposition, it would be a chemical change because a new substance is formed.
One chemical property of substance is its density or not?
Density is a physical property of a substance, not a chemical property.Density is a measure of how much mass is contained in a given volume of a substance. Chemical properties describe how a substance interacts with other substances, such as its reactivity or ability to undergo chemical changes.
What is the ability of a substance to undergo or resist chemical changes?
Chemical Reactivity :)
How is a chemical property different from a physical property?
A chemical property describes how a substance reacts or changes to form a new substance, such as flammability or reactivity. A physical property, on the other hand, describes characteristics of a substance that can be observed or measured without changing its identity, such as color, density, or melting point.
Properties seen when one substance changes to another are know as properties?
The properties exhibited during a substance's transformation to another substance are known as chemical properties. These characteristics relate to the ability of a substance to undergo chemical changes, such as reactivity with other substances or the formation of new compounds.
Is Hg a physical or chemical change?
Hg is not a change, it is an element. It can undergo changes, both physical and chemical.
Which property of a substance does not change when the amount of the substance changes?
The intensive property of a substance does not change when the amount of the substance changes. Examples include density, boiling point, and refractive index. These properties are independent of the quantity of the substance and are useful for identifying and characterizing materials.
