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A physical reaction involves changes in the state or appearance of a substance without altering its chemical composition, such as melting, freezing, or dissolving. In contrast, a chemical reaction results in the formation of new substances with different chemical properties through the breaking and forming of bonds, as seen in processes like combustion or rusting. Essentially, physical reactions are reversible while chemical reactions often produce irreversible changes.
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Is a substance freezing a chemical reaction?
Freezing is a physical change, not a chemical reaction. When a substance freezes, its molecules slow down and arrange into a solid structure. Chemical reactions involve the rearrangement of atoms to form new substances with different chemical properties.
When substances are formed that are different from the starting substances has physical change occurred?
No, a physical change refers to a change in the form or appearance of a substance without any change in its chemical composition. If new substances are formed with different chemical properties, then a chemical change has occurred, not a physical change.
Is polymerize to form polyethylene a chemical or physical?
Polymerization is not a property; it is a type of chemical reaction.
When atoms are rearranged into different combinations of compounds Physical Reaction?
The rearranging of atoms to form new combinations is called "chemical reaction", and the "new combinations" are called "compounds.
When atoms of the reactants unbond rearrange and then rebond to form the products what type of reaction is this chemical or physical?
When atoms of the reactants unbond, rearrange, and then rebond to form new substances, this is a chemical reaction. In a chemical reaction, the identities of the reactants change as they form new products, which involves breaking and forming chemical bonds. In contrast, physical changes do not alter the chemical composition of the substances involved.
Is ice melting. A chemical reaction?
No, it's a physical reaction because it is still water just in a different form.
Is a form of green carbonate when exposed to moist air a physical property or chemical property?
This is a chemical property. The reaction of green carbonate with moist air to form a different substance involves a change in the chemical composition of the substance, indicating a chemical reaction.
Is magnesium plus oxygen a chemical or physical change?
The reaction between magnesium and oxygen to form magnesium oxide is a chemical change. This is because new substances with different properties are formed during the reaction.
Is a substance freezing a chemical reaction?
Freezing is a physical change, not a chemical reaction. When a substance freezes, its molecules slow down and arrange into a solid structure. Chemical reactions involve the rearrangement of atoms to form new substances with different chemical properties.
If Iron and oxygen form rust is it a chemical or physical reaction?
The formation of rust from iron and oxygen is a chemical reaction. This is because the iron reacts with oxygen in the air to form a new compound, iron oxide (rust), which has different chemical properties from the original iron.
When bromine reacts with sodium to form a white solid is it a physical or chemical change?
The reaction between bromine and sodium to form a white solid is a chemical change. This is because the atoms are rearranging to form new compounds with different properties, indicating a chemical reaction has occurred.
When substances are formed that are different from the starting substances has physical change occurred?
No, a physical change refers to a change in the form or appearance of a substance without any change in its chemical composition. If new substances are formed with different chemical properties, then a chemical change has occurred, not a physical change.
Is polymerize to form polyethylene a chemical or physical?
Polymerization is not a property; it is a type of chemical reaction.
When atoms are rearranged into different combinations of compounds Physical Reaction?
The rearranging of atoms to form new combinations is called "chemical reaction", and the "new combinations" are called "compounds.
How are the terns reactant product and chemical reaction related?
In a chemical reaction, reactants are the substances that undergo a change to form products. Reactants are written on the left side of a chemical equation, while products are written on the right side. The chemical reaction is the process by which reactants are transformed into products through the breaking and forming of chemical bonds.
Is polymerization to form polyethylene a chemical or physical property?
Polymerization is not a property; it is a type of chemical reaction.
What is a change that alters the form or appearance of a substance but does not make it into other substance?
It is considered a physical change. A chemical change involves chemical reactions that change the substance into another substance. A physical change typically only modifies the form or phase.
