Is odor change a chemical change?

Asked By: Astrid Gafiyatullin | Last Updated: 29th June, 2020
Category: science chemistry
3.9/5 (476 Views . 24 Votes)
Thus, color and temperature changes are physical changes, while oxidation and hydrolysis are chemical changes. Odor is generated when substances change composition. A very common example is rotting of eggs, that have a very different odor from fresh eggs. Hence, odor is a chemical change.

Click to see full answer


Accordingly, is sound a chemical change?

Summary. A chemical change occurs whenever matter changes into an entirely different substance with different chemical properties. Signs of chemical change include the release of bubbles, a change of color, production of an odor, release of heat and light, and production of loud sounds.

Also Know, is odor a chemical or physical property? Characteristics such as melting point, boiling point, density, solubility, color, odor, etc. are physical properties. Properties that describe how a substance changes identity to produce a new substance are chemical properties.

Furthermore, can a chemical change be reversed?

Because chemical changes produce new substances, they often cannot be undone. For example, you can't change ashes from burning logs back into wood. Some chemical changes can be reversed, but only by other chemical changes. For example, to undo tarnish on copper pennies, you can place them in vinegar.

Which of the changes are chemical changes?

A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.

39 Related Question Answers Found

What are 10 chemical changes examples?

The ten examples of chemical changes are :
  • Burning of coal, wood, paper, kerosene, etc.
  • Formation of curd from milk.
  • Electrolysis of water to form hydrogen and oxygen.
  • Rusting of iron.
  • Bursting of a cracker.
  • Cooking of food.
  • Digestion of food.
  • Germination of seeds.

Which is a chemical property?

A chemical property is a characteristic of a substance that may be observed when it participates in a chemical reaction. Examples of chemical properties include flammability, toxicity, chemical stability, and heat of combustion.

Is melting a chemical or physical change?

That means that physical change is transforming a solid into a liquid or gas, or a liquid into a solid or gas, or a gas into a liquid or solid. While chemical change is when you have a substance that gets transformed into 1 or more different substances. Thus, melting is a physical change.

Is sublimation a chemical or physical change?

Sublimation is a physical change. When a substance sublimes, it changes from a solid to a gas without going through the liquid phase. This does not result in a chemical change, though. Dry ice is carbon dioxide in the solid phase.

How do you indicate a chemical change?


Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color chage, formation of a precipitate, formation of a gas, odor change, temperature change.

What are causes of chemical changes?

A chemical change occurs when a new substance is formed through a chemical reaction like when fruit ripens or rots. In some instances, simply applying heat can cause a chemical change. Cooking pancakes, for instance, is an example of a chemical change; the pancake batter "changes" from a liquid to a solid.

Why do chemical changes occur?

Chemical Reactions. Reactions occur when two or more molecules interact and the molecules change. Bonds between atoms are broken and created to form new molecules.

Is boiling water a physical change?

They are also physical changes because they do not change the nature of the substance. Boiling waterBoiling water is an example of a physical change and not a chemical change because the water vapor still has the same molecular structure as liquid water (H2O).

Is mixing sugar and water a chemical change?

Dissolving sugar in water is an example of a physical change. Here's why: A chemical change produces new chemical products. In order for sugar in water to be a chemical change, something new would need to result. If you evaporate the water from a sugar-water solution, you're left with sugar.

Is milk souring a chemical change?


Souring milk is not something you can reverse, and the process of it souring produces new molecules. Some other examples of chemical changes would be things that involve burning, the creation of a new gas or bubbles, or change in color, like the formation of rust.

Is burning wood a physical change?

Burning of wood is a chemical change as new substances which cannot be changed back (e.g. carbon dioxide) are formed. For example, if wood is burned in a fireplace, there is not wood anymore but ash. Compare: Physical change - The opposite of a chemical change is a physical change.

Is a banana ripening a chemical change?

Ripening of fruits, such as banana, is a chemical change. A number of changes take place during the ripening phase. The color of the fruit changes, as does its texture. Given all these changes in the chemistry of banana, one can safely term the ripening process as chemical change.

Is melting butter a chemical change?

Melting is usually considered a physical change especially in instances like this where a solid melts to a liquid. One does not do this while melting butter and therefore melting butter is not a chemical change.

Are all the physical changes reversible?

Physical changes that involve a change of state are all reversible. Other changes of state include vaporization (liquid to gas),freezing (liquid to solid), and condensation (gas to liquid). Dissolving is also a reversible physical change.

Is breaking up concrete a physical change?


In a physical change, the makeup of matter is changed. Combining hydrogen and oxygen to make water is a physical change. Breaking up concrete is a physical change. Sand being washed out to sea from the beach is a chemical change.

Is water a reversible reaction?

Reversible Reactions
Consider again the reaction in which hydrogen gas and oxygen gas combine to produce water. This reaction is reversible if an electric current is applied to the water that is produced.

Is water freezing a chemical change?

Freezing water is NOT a chemical change. It is a physical one. Water molecules remain as water molecules, still two hydrogen atoms and one oxygen atom. When freezing water, the water molecules arrange in a regular manner, so it adopts what is called the crystalline structure.