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Yes it can, if you alter the conditions. For instance, if you heat calcium carbonate strongly it will decompose to calcium oxide and water. Limestone is a form of calcium carbonate and we heat it on a large scale to manufacture calcium oxide (quicklime) which is an ingredient of cement, mortar and concrete.
CaCO3 à CaO + CO2but when concrete sets,. CaO + CO2à CaCO3 again.
Chemical changes are typically not reversible, as they involve a transformation at the molecular level. Once new substances are formed through a chemical reaction, it is often difficult or impossible to revert them back to their original state.
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Are chemical changes irreversible If yes then what about the chemical reactions that are reversible Don't we say that all chemical reactions are chemical changes?
some chemical changes can be reversed but they are hard to reverse usually
Is melting ice a chemical or physical change explain?
It is a physical change because when you have a chemical change it changes the properties and makes it into a new thing, and it can't be reversed. Physical changes are usually just changes of states (solid, liquid, gas) and a physical change can be reversed.
What changes can't be reversed by physical means?
Changes that involve irreversible chemical reactions, such as burning wood to ashes or baking a cake, cannot be reversed by physical means. Once the chemical bonds are broken or rearranged, it is not possible to return the substances to their original state through physical processes alone.
Can a chemical change be reversed by a chemical change?
It Looks like your tryhing to cheat on Science TeeHee Chemical changes cannot be reversed but phyical changes can ! I disagree. Some chemical changes can be reversed. If you boil off the water and catch it in a container when it evaporates, the water will be back. If you then look at the bottom and possibly sides of your beaker there will be only salt left behind.
What is the difference between chemical and physical changes?
Chemical changes involve the rearrangement of atoms to form new substances with different chemical properties. Physical changes, on the other hand, only affect the physical state of a substance (such as its shape, size, or phase) without changing its chemical composition.
Does chemical changes can be reversed by physical changes?
dont q
Are chemical changes irreversible If yes then what about the chemical reactions that are reversible Don't we say that all chemical reactions are chemical changes?
some chemical changes can be reversed but they are hard to reverse usually
Chemical changes can be reserved by physical change?
No, chemical changes cannot be reversed by physical changes. Chemical changes involve the formation of new substances with different properties, while physical changes only affect the state or appearance of a substance without changing its chemical composition. Once a chemical change occurs, it cannot be undone by a physical change.
Explain Why physical changes can be reversed but chemical changes cannot?
Physical changes are generally easy to reverse because NO ENERGY is produced by the substance.A Chemical change cannot be reversed because ENERGY is produced by the substance forming a new substance.
How can chemical change be reserved?
Chemical changes cannot be reversed because they involve the formation of new substances with different chemical properties. Once a chemical reaction occurs, it is usually not possible to return the reactants to their original state.
Why physical changes can easily be reversed but why chemical cannot?
Physical changes are generally easy to reverse because NO ENERGY is produced by the substance.A Chemical change cannot be reversed because ENERGY is produced by the substance forming a new substance.
Is melting ice a chemical or physical change explain?
It is a physical change because when you have a chemical change it changes the properties and makes it into a new thing, and it can't be reversed. Physical changes are usually just changes of states (solid, liquid, gas) and a physical change can be reversed.
What changes can't be reversed by physical means?
Changes that involve irreversible chemical reactions, such as burning wood to ashes or baking a cake, cannot be reversed by physical means. Once the chemical bonds are broken or rearranged, it is not possible to return the substances to their original state through physical processes alone.
Can a chemical change be undone?
In general, chemical changes cannot be undone. Once a chemical reaction occurs, it typically cannot be reversed to restore the original substances.
What is the difference between physically and chemical changes?
A chemical change is when something cannot be reversed and often a precipitate (solid) is formed. While a physical change can be reversed e.g bending a piece of wire.
Can a chemical change be reversed by a chemical change?
It Looks like your tryhing to cheat on Science TeeHee Chemical changes cannot be reversed but phyical changes can ! I disagree. Some chemical changes can be reversed. If you boil off the water and catch it in a container when it evaporates, the water will be back. If you then look at the bottom and possibly sides of your beaker there will be only salt left behind.
Is it correct to say that chemical changes are not reverisble but phycial changes are?
No, chemical reactions can be reversed. For example: 2H2O -> 2H2 + O2 can change back, 2H2 + O2 -> 2H2O
