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When a green powder is heated it turns black and a gas is produced is this a reversible or irreversible change?
when green powder is heated, it turns black and a gas is produced. in irreversible changes, new materials are always formed. given that a gas is produced, which is a new material, heating green powder is an irreversible change.
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When green powder is heated it turns black and a gas is produced is this a reversible or irreversible change?
when green powder is heated, it turns black and a gas is produced. in irreversible changes, new materials are always formed. given that a gas is produced, which is a new material, heating green powder is an irreversible change.
Whether the change caused in tar by heating is reversible?
it can't be changed,i.e.,irreversible change...
Does hand soap have an reversible change or irreversible?
Most changes in hand soap are reversible, meaning it can go back to its original state. For example, if a solid bar of soap melts when heated, it can solidify again when cooled. However, if the soap is burned (irreversible change), it cannot return to its original form.
Is cream reversible or a irreversible?
No, it is not reversible as you can't get the ingredients to make the jelly back. Therefore it is an irreversible change. (first message on Answers.com.) This is what I thought originally as well; however, jelly is only a disolved into the water. It will change state to a solid when cooled, but, when heated, it will melt. If heated (slowly) the water will evaporate and leave the jelly crytals behind. Sort of like salty water. They might not look the same, but the water will return to its original state. Thus, jelly is a reversible change.
Is baking powder reversible of irreversible in water?
Baking powder is generally considered a reversible reaction in water, as it dissolves and dissociates into its components, allowing it to react chemically when mixed with other ingredients. However, the reaction that occurs when baking powder is heated (producing carbon dioxide gas) is irreversible. Thus, while its dissolution in water is reversible, the subsequent chemical reactions during baking are irreversible.
Can enzyme change?
Yes.VocabularyEnzymes- long linear chains of amino acids that can foldDenaturization- a process where enzymes move to their second structureMost enzymes can be denatured by heated or by certain chemicals. Some enzymes' denaturization is reversible, others is irreversible.
What does thermochromatic mean?
it refers to a substance undergoing a reversible change of colour when heated or cooled
Is bicarbonate soda reversible or irreversible?
Bicarbonate soda is reversible. When it is heated, it decomposes to form carbon dioxide, water, and sodium carbonate. This reaction can be reversed by adding an acid, such as vinegar, which will cause the sodium carbonate to react with the acid and reform bicarbonate soda.
Is Jelly Irreversible?
Jelly is a colloidal suspension of water, sugar, and pectin, which forms a gel-like structure when cooled. This gel structure is reversible, meaning that jelly can return to a liquid state when heated. However, if jelly is overheated or boiled for too long, the pectin molecules can break down irreversibly, causing the jelly to lose its ability to gel properly. So, while the process of gelling and melting jelly is reversible, irreversible changes can occur if the jelly is heated too much.
Give an example of a reversible change?
An example of a reversible change is an ice cube meting into water and then changing back to an ice cube again if frozen. Another is chocolate melting when heated and changing back to a solid when cooled.
Is the decomposition reaction of calcium carbonate in an open container reversible or irreversible?
The decomposition of calcium carbonate in an open container is irreversible, because one of the decomposition products, carbon dioxide, is a gas, and since the container is open, this gas will mix with the natural atmosphere and never develop sufficient local partial pressure to reverse the reaction.
Is heating milk a reversible physical change?
Heating milk is a reversible physical change because the milk can be cooled back down to its original state. When milk is heated, its properties change temporarily, but it can return to its initial state once cooled.
