There is a chemical change because the liquid water, after passing an electric current, produces hydrogen and oxygen gases. This is a reaction.
Is passing of electric current through water a physical change?
(v) Passing of electric current through water and the water breaking down into hydrogen and oxygen gases is a chemical change. (vi) Dissolving common salt in water is a physical change.
Is passing electric current a physical or chemical change?
Electrolysis, process by which electric current is passed through a substance to effect a chemical change. The chemical change is one in which the substance loses or gains an electron (oxidation or reduction).
When an electric current is passed through water during the process?
when an electric current is passed through water during the process of electrolysis, two gases are formed. One gas has a boiling point of -183C degree and the other has a boiling point of -253C degree.
Is electricity passed through water?
When electric current is passed through water, water dissociates into hydrogen and oxygen. Hydrogen is deposited over negative pole and oxygen is deposited over positive pole. Deposition of hydrogen and oxygen at different poles is visible in the form of bubbles.
Is cutting of trees is a physical change?
-Cutting of Trees: It is a physical change because in cutting the molecular structure of the trees does not change, only the size of the wood changes as it is cut into small pieces.
Is Melting of butter a physical change?
When you first apply heat to a solid substance like butter, it melts into a liquid. This is a physical change. You can prove that this is a physical change because if you put the melted butter back in the fridge, it changes back to solid butter.
Which option is an example of a physical change?
A change in physical properties is called a physical change. Physical changes do not alter the identity of a substance. Pounding, pulling, cutting, dissolving, melting, or boiling do not produce a new substance with new properties, so they are all physical changes.
Which is the best example of a physical change?
Examples of Physical Changes
- Crushing a can.
- Melting an ice cube.
- Boiling water.
- Mixing sand and water.
- Breaking a glass.
- Dissolving sugar and water.
- Shredding paper.
- Chopping wood.
What is an example of a physical change in everyday life?
Examples of physical change include changes in the size or shape of matter. Changes of state—for example, from solid to liquid or from liquid to gas—are also physical changes. Some of the processes that cause physical changes include cutting, bending, dissolving, freezing, boiling, and melting.
When an electric current is pass through an insulated wire?
When an electric current is passed through an insulated wire that is coiled around an iron core, like a nail, an electromagnet is created.
When an electric current is passed through water during the process of electrolysis two gases are formed one gas has a boiling point of degree and the other has a boiling point of degree has a physical or chemical change occurred?
In thic electrolysis reaction two gases are formed, one is oxygen with boiling point of -183°C and second one is hydrogen with boiling point of -253°C. This is chemical change because from one molecule two molecules are produced and because they have new boiling points, boiling point of water is 100°C.
What does electric current measure Jiskha?
It is the measurement of the rate of electrical energy in a circuit. It describes how much electrical energy passes in a circuit.