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Condensation of water vapor occurs when water vapor cools and changes back into liquid form. Decomposition of sugar happens when heat breaks down the sugar molecules into simpler compounds. Rusting of iron occurs when iron reacts with oxygen in the presence of water to form iron oxide.

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1y ago

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Is rusting a nail a physical change or chemical change?

A nail rusting is a chemical change. The chemical formula of the metal completely changes, adding oxygen to the formula. Iron changes from Fe to FeO2 , or to Fe2O3


What are chemical changes in matter?

rusting, burning, polymerizing,


Is rusting a chemical or physical property?

Rusting is a chemical property because it is irreversible. It changes the identity of the substance.


What are the physical and chemical changes in metal?

Physical Changes in metal are: melting bending and rusting


Does the paint on a car help prevent from physical changes?

No but it helps prevent chemical changes like rusting.


What are some physical changes when rusty metal is an example?

what are some physical changes when rusting metal is an example


Is a rusting bicycle a chemical changes or a physical change?

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Which of the following processes does not involve a chemical change in property A rusting B boiling C burning D fermenting?

Boiling does not involve a chemical change in property. Boiling is a physical change in which a substance changes from a liquid to a gas without changing its chemical composition. The other options (rusting, burning, fermenting) involve chemical reactions that result in changes to the chemical composition of the substances involved.


What are two examples of chemical changes?

1) a nail rusting 2) photosynthesis


Is an Expansion and contraction with regard to weathering are caused by rusting?

Expansion and contraction in weathering are caused by temperature changes, not rusting. Rusting is a chemical process that occurs when iron reacts with oxygen in the presence of water, leading to the formation of iron oxide (rust). However, rusting can contribute to the weakening and eventual breakdown of materials, which may then be more susceptible to expansion and contraction due to temperature changes.


Is water condensing a chemical change?

No, it is a Physical Change. Physical Changes are concerned with energy and states of matter. A physical change does not produce a new substance. Changes in state or phase (condensation, melting, freezing, vaporization, sublimation) are physical changes. Other examples of physical changes include crushing a can, melting ice, and breaking a bottle. Chemical changes take place on the molecular level. A Chemical Change produces a new substance. Some examples of chemical changes include combustion (burning) and rusting of a metal.


What type of change such as burning or rusting in which the identity of the substance changes?

a chemical change