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Why is there no evidence of a chemical reaction when water molecules are produced in a double replacement reaction?
This is not, strictly speaking, true. There is evidence of a chemical reaction in, for example, the reaction of aqueous HCl with an NaOH solution, even though there is no precipitate, no color change, and no evolution of gas. You just might not notice it unless you carried it out in a calorimeter and could measure the release of chemical energy as heat.
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How are reactant elements or molecules different than the compound produced in a chemical reaction?
reactant elements and molecules are used in a chemical reaction, they are not mixed or combined or produced in a chemical reaction.
What are chemical messengers in the cell that control the amounts of enzyme produced?
The chemical messengers in the cell that control the amounts of enzyme produced are called signaling molecules or ligands. These molecules bind to specific receptors on the cell membrane or inside the cell, triggering a signaling cascade that ultimately regulates the expression and activity of enzymes. Examples of signaling molecules include hormones, neurotransmitters, and growth factors.
Is burning newspaper a physical change?
Yes, burning newspaper is a chemical change because it undergoes a chemical reaction (combustion) that changes its chemical composition. The heat and flame produced during burning are evidence of this chemical reaction taking place.
How many ATP molecules are produced during aerobic respiration of sucrose?
72 molecules of ATP are produced .
Why a rotten fruit is a chemical change?
Rotting of fruit involves the breakdown of complex organic molecules into simpler compounds through biological processes like fermentation or decomposition. This transformation results in the formation of new substances with different properties, which is characteristic of a chemical change. The chemical composition of the fruit changes as new molecules are produced, distinguishing it from a physical change.
What is the definition of chemical evidence?
Material produced by or used in a reaction involving changes in atoms or molecules. :D
How are reactant elements or molecules different than the compound produced in a chemical reaction?
reactant elements and molecules are used in a chemical reaction, they are not mixed or combined or produced in a chemical reaction.
Can new elements be produced in a chemical reaction can new molecules be produced through a chemical reaction?
New elements can by obtained only by nuclear reactions.New molecules can be obtained by chemical reactions.
Which molecules is produced during the process shown of chemical process?
The term "chemical process" refers to the method of altering, or treating one or more chemicals to produce something else. The type of molecules which may be produced during this process is wholly reliant on the chemical which is being used.
What is chemical evidence?
Chemical evidence refers to the use of chemical analysis techniques to identify, characterize, and analyze evidence in criminal investigations. This can involve identifying substances, determining their composition, or linking evidence to a suspect or crime scene based on unique chemical signatures. Chemical evidence is commonly used in forensic investigations to provide crucial information and support legal proceedings.
In which step are ATP molecules produced?
The Two molecules of pyruvic acid produced in ATP molecules
What are chemical messengers in the cell that control the amounts of enzyme produced?
The chemical messengers in the cell that control the amounts of enzyme produced are called signaling molecules or ligands. These molecules bind to specific receptors on the cell membrane or inside the cell, triggering a signaling cascade that ultimately regulates the expression and activity of enzymes. Examples of signaling molecules include hormones, neurotransmitters, and growth factors.
Is wind chemical energy?
No, wind is not chemical energy. Wind is a form of kinetic energy produced by the movement of air molecules in the atmosphere. Chemical energy, on the other hand, is stored in the bonds of chemical compounds and is released during chemical reactions.
What observations give evidence that a chemical reactions has happened?
is the colour change, tempeture change ,gas produced the most common ones
What contributes to chemical digestion?
Enzymes contribute to chemical digestion. They are produced by the pancreas and together with bile, chemically change food into molecules so that it can be absorbed easily by the body.
What evidence of chemical change is visible when electricity is run through water?
Water can be chemically changed, for instance, when an electric current is run through a sample, separating it into oxygen and hydrogen gas. Chemical change requires a chemical reaction, a process whereby the chemical properties of a substance are altered by a rearrangement of the atoms in the substance.Added:What is visible: it is gas bubles of hydrogen and oxygen coming out from the electrodes: O2 at the positive anode, H2 at the negative cathode.
Bubbling present during a chemical reaction is evidence of what?
Bubbling present during a chemical reaction is evidence of a gas being produced. The formation of gas bubbles indicates that a chemical change is taking place, often as a result of a reaction between two or more substances.
