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Chemical change
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Is using hot water to expand a metal cup a physical or chemical change?
Using hot water to expand a metal cup is a physical change. The change in size and shape of the cup is due to the expansion of the metal atoms when heated, but the chemical composition of the metal cup remains the same.
Is sanding a table top a chemical change?
Nope... sanding a table top is a physical change
Is a tree growing a chemical or a physical change?
First of all lets understand Physical & Chemical Change. Physical change can be reversed and the chemical properties of the two states remain the same. Chemical change cannot be reversed and the chemical properties of the two state are entirely different. Now lets get back to the question. Is growing a tree a physical or a chemical change. The growing of a tree requires chemical changes, primarily the conversion of water and carbon dioxide into cellulose and oxygen. So the growth results primarily from chemical changes.
What will produce a physical change in one substance and a chemical change in another substance?
A physical change simply alters the shape, size, color and physical state (solid, liquid, gas, plasma state) of a material. Melting ice, boiling water, freezing water, mixing sulphur with iron filings, and even tearing paper will produce physical change. Composition of a substance remains unchanged in case of a physical change.A chemical change involves the breaking of old bonds and the creation of new bonds that hold particles (atoms, molecules) together. In this, a new substance is formed. Rusting of an iron, the formation of white ash of MgO when magnesium wire burns are examples of chemical change.A physical change can be reversed by using physical processes such as evaporation, crystallization, distillation, etc; whereas a chemical change can't be reversed using physical processes.
How do you separate mixtures and compounds?
You can break down a mixture by physical means
Is using batteries a physical change?
Chemical change
Is using battery's chemical or physical change?
Chemical change
Using a battery chemical change or physical?
Chemical change
Is using scissors to cut paper a physical or chemical change?
It is a physical change, as the chemical integrity remains the same.
Is using acid to clean metal a physical change?
No, it is a chemical change.
Is filtering air to remove dust and pollen a physical or chemical change?
Filtering air to remove dust and pollen is a physical change because the process does not alter the chemical composition of the dust and pollen particles. It simply separates them from the air through physical means, such as using a filter.
Is silver melts when using a blow torch a chemical or physical recation?
It is a physical reaction. Melting is a physical change because it does not change the chemical composition of the substance.
Is making iron from iron ore a chemical or physical change?
Preparation of pure iron from iron ores involve physical changes but also chemical changes.
Is using a dehumidifier for moisture a chemical or physical change?
No. It is a physical change.
If you had a mixture of two substances and had your choice of using a physical change or a chemical change to separate them which would you prefer?
Physical change is preferable because it is easier than chemical method.
Is a plant using Co2 and H20 to form 02 and sugar a chemical or physical change?
A chemical change. If the identity of of the chemicals involved change in identity, it is a chemical change.
When bleach spills on a shirt is it a chemical change?
Yes, when bleach spills on a shirt and causes the fabric to change color or degrade, it is considered a chemical change. Chemical changes involve a rearrangement of atoms and the formation of new substances.
